TBO.comChildren invent fun ways to study math and science at summer campTBO.comChildren invent fun ways to study math and science at summer camp. Amanea Hedrick, 9, left, with 10yearold Kailey Rubsch and Malory Houston, 10, work on projects at Camp Invention. KAYLA LEWIS. Children practice team building and collaboration at ...
Math

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Children invent fun ways to study math and science at summer camp  TBO.com
MATH  Google News4 Jul 2015  3:07 am 
They got over it a " why cana t you?
Search for "math OR mathematics"4 Jul 2015  3:49 amFormer Civil War enemies reach out in friendship at the stone wall during the Great Reunion at Gettysburg in 1913. One hundred and two years ago today in southern Pennsylvania, more than 50,000 Americans who literally fought in our nation's defining  and deadliest  conflict concluded a friendly sixday “Great Reunion” of exenemies. 
Men think they are maths experts, therefore they are
Mathematics News  ScienceDaily23 Jun 2015  10:17 amJust because more men pursue careers in science and engineering does not mean they are actually better at math than women are. The difference is that men think they are much better at math than they really are. Women, on the other hand, tend to accurately estimate their arithmetic prowess. 
A Belated Apology to Mozart and Modular Arithmetic
Scientific American  Math27 Jun 2015  7:00 pmWhat do Mozart and modular arithmetic have in common? I used to think I didn't like them. I'm sorry, Mozart and modular arithmetic. Please forgive me.  Read more on ScientificAmerican.com 
The Short Stories We Tell Ourselves About Everyday Spending
NYT > Mathematics28 Jun 2015  9:00 pmPeople love to blur the numbers, even with everyday subjects like credit card spending.

MATH  Google News

Children invent fun ways to study math and science at summer camp  TBO.com
4 Jul 2015  3:07 amTBO.comChildren invent fun ways to study math and science at summer campTBO.comChildren invent fun ways to study math and science at summer camp. Amanea Hedrick, 9, left, with 10yearold Kailey Rubsch and Malory Houston, 10, work on projects at Camp Invention. KAYLA LEWIS. Children practice team building and collaboration at ... 
For many, remedial math not a solution  Boston Globe
3 Jul 2015  7:21 pmBoston GlobeFor many, remedial math not a solutionBoston GlobeHAVERHILL — On a cool June morning, Lillian Santana is in a remedial math class, stuck on a problem about negative exponents. “I'm thinking you divide,” her classmate says. Santana isn't sure. She whips out her iPhone, opens the calculator, and and more » 
High school students may have to add more math  Alton Telegraph
3 Jul 2015  5:25 pmHigh school students may have to add more mathAlton TelegraphSPRINGFIELD – Illinois lawmakers want to see high schoolers add another year of math, without subtracting from students planning to hit the workforce immediately after graduation. State Sen. Mike Frerichs, DGifford, introduced Senate Bill 3244, which ... 
Montana teachers in math and science receive honors from Obama  KPAXTV
3 Jul 2015  2:06 pmClarksville OnlineMontana teachers in math and science receive honors from ObamaKPAXTVTwo Montana teachers were honored by President Obama on Thursday as outstanding educators. Obama honored Daniel Bartsch of Billings Senior High School and David McDonald of Sidney High School. Obama named 108 math and science teachers as ...Montgomery Central math teacher wins presidential awardClarksville Leaf ChronicleMontgomery Central High School Math Teacher Micahel Brown Wins Clarksville OnlineTwo Montana Teachers Win Presidential Science and Math Teaching AwardKULRTVnewsindiatimes.comall 88… 
Albert clock uses math to tell time  Gizmag
3 Jul 2015  12:01 pmGizmagAlbert clock uses math to tell timeGizmagIf you want to know what time it is, you'll have to do a little work with this clock. Meet Albert, a wall clock for children that breaks down the current time into math problems. Named after Albert Einstein, the clock makes you solve equations in order

Search for "math OR mathematics"

They got over it a " why cana t you?
4 Jul 2015  3:49 amFormer Civil War enemies reach out in friendship at the stone wall during the Great Reunion at Gettysburg in 1913. One hundred and two years ago today in southern Pennsylvania, more than 50,000 Americans who literally fought in our nation's defining  and deadliest  conflict concluded a friendly sixday “Great Reunion” of exenemies. 
Students in region acing both ACT, SAT
4 Jul 2015  3:37 amIf there was a perfect ACT score in central Ohio, there's a good chance it came from a Dublin student. In the past four years, 25 Dublin students have aced the collegereadiness test. 
Far fewer passing GED test
4 Jul 2015  3:36 amThe number of people successfully obtaining their GED, Ohio's only official highschool equivalency test, plunged by 86 percent last year, and the rebound to normalcy that some state officials have been predicting is nowhere in sight. GED Testing Service, a forprofit partnership that has the monopoly on the highschool equivalency degree in Ohio, is on pace to award about 3,700 GED certificates this year, according to the Ohio Department of Education. 
Rajnath Singh asks students to use knowledge for benefit of society
4 Jul 2015  3:09 amUnion Home Minister Rajnath Singh on Saturday asked young graduates to use knowledge in a positive manner to the benefit the society. Delivering the convocation address at the Jaypee University, Singh said, "You have education, you have knowledge. 
Patriotic Mothers
4 Jul 2015  3:08 amWhen I was a little girl I loved the fireworks and the star spangle banner. I would sing beautifully...."America, America gd shed your grace on thee."

Mathematics News  ScienceDaily

Men think they are maths experts, therefore they are
23 Jun 2015  10:17 amJust because more men pursue careers in science and engineering does not mean they are actually better at math than women are. The difference is that men think they are much better at math than they really are. Women, on the other hand, tend to accurately estimate their arithmetic prowess. 
Reversing the deadly side effects of Tylenol overdose
22 Jun 2015  9:47 amNew research could help reverse deadly side effects caused by excessive doses of the drug acetaminophen, the major ingredient in Tylenol and many other medicines. Researchers have developed a mathematical model of acetaminophen metabolism based on data from rats. The findings suggest that giving patients glutamine  a common amino acid in the body  alongside the standard antidote for acetaminophen overdose could prevent liver damage and boost the body's ability to recover. 
Math students a hit with Minor League Baseball schedulers
18 Jun 2015  7:34 amWith the help of some Johns Hopkins University math students, Minor League Baseball is catching up with the majors in using computers to produce season schedules. 
Ebola news coverage linked to public panic
15 Jun 2015  1:28 pmA team of researchers fit a mathematical contagion model for the spread of disease to Twitter and Google search trend data in the wake of the US Ebola outbreak of October 2014 and discovered that media reports incited sizable public concern before a 'boredom' effect prevailed. 
Squid inspires camouflaging smart materials
15 Jun 2015  7:39 amResearchers have shown it is possible to create artificial skin that can be transformed at the flick of a switch to mimic one of nature's masters of camouflage, the squid.

Scientific American  Math

A Belated Apology to Mozart and Modular Arithmetic
27 Jun 2015  7:00 pmWhat do Mozart and modular arithmetic have in common? I used to think I didn't like them. I'm sorry, Mozart and modular arithmetic. Please forgive me.  Read more on ScientificAmerican.com 
Mathematical Art Takes a Fresh Look at Wallpaper
26 Jun 2015  5:00 amA mathematician shares new strategies for making patterns with repeating symmetries  Read more on ScientificAmerican.com 
What Is the Famous Monty Hall Problem?
24 Jun 2015  6:00 amEver heard of the Monty Hall problem? If so, did the world famous brain teaser leave you flummoxed? If not, how does getting flummoxed—and then just as quickly unflummoxed—sound?...  Read more on ScientificAmerican.com 
LEGO Adds More Women in Science to Its Lineup
24 Jun 2015  4:00 amThe toy company has taken significant steps to address consumer interest in the addition of more female characters in STEM fields  Read more on ScientificAmerican.com 
Restore Research to Preserve the American Dream
23 Jun 2015  8:54 amNorman Augustine, former CEO of Lockheed Martin and former undersecretary of the Army talks about the report he cochaired for the American Academy of Arts & Sciences, "Restoring the...  Read more on ScientificAmerican.com

NYT > Mathematics

The Short Stories We Tell Ourselves About Everyday Spending
28 Jun 2015  9:00 pmPeople love to blur the numbers, even with everyday subjects like credit card spending. 
Meet the New Common Core
15 Jun 2015  9:00 pmBut don’t get too excited. It’s the same as the old one. 
‘How to Bake Pi,’ by Eugenia Cheng
13 Jun 2015  9:00 pmRecipes for tapping the logic and beauty of mathematics. 
Bedtime Math’s Founder Uses an Eggbeater for More Than Just Eggs
26 May 2015  9:00 pmLaura Overdeck turns an eggbeater into a teachable moment. 
John F. Nash Jr., Math Genius Defined by a ‘Beautiful Mind,’ Dies at 86
24 May 2015  9:00 pmThe narrative of Dr. Nash’s brilliant rise, the lost years of severe mental illness, and the eventual awarding of a Nobel captured the public mind.

Loren on the Art of MATLAB

Natural Neighbor – A Superb Interpolation Method
1 Jul 2015  11:46 amI'm happy to welcome Damian Sheehy as this week's guest blogger. Damian works on the development of geometryrelated features at MathWorks. He will provide answers to two frequently asked questions; one on scattered data interpolation that he will cover in this blog and the other on Delaunay triangulation that he will cover in the next. Over to you, Damian...ContentsAn Email from Customer SupportWhy griddata or scatteredInterpolant May Be InconsistentExample of Inconsistent Behavior in Linear InterpolationWhy Natural Neighbor Interpolation is SuperiorYou Tell Me!An Email from Customer… 
How Do You Modify the Background of an Image?
24 Jun 2015  8:36 amToday I'd like to introduce guest blogger Brett Shoelson. Some of you may know Brett through his File Exchange submissions, or through his involvement with the Pick of the Week blog, or from occasional guest posts on Steve’s blog on image processing.Contents"The visa problem"The original photoFirst question: how do we isolate the background?Is the effort of automation justified?Improving the maskModifying the backgroundTwo problems remain...Planewise manipulationsFixing the interfaceA final note"The visa problem"Loren recently told me she had a pending international trip that requires a… 
Getting Started with Kaggle Data Science Competitions
18 Jun 2015  11:44 amHave you been interested in data science competitions, but not sure where to begin? Today's guest blogger, Toshi Takeuchi, would like to give a quick tutorial on how to get started with Kaggle using MATLAB.ContentsThe Titanic Competition on KaggleData Import and PreviewEstablishing the BaselineBack to Examining the DataExploratory Data Analysis and VisualizationFeature EngineeringYour Secret Weapon  Classification LearnerRandom Forest and Boosted TreesModel EvaluationCreate a Submission FileConclusion  Let's Give It a TryThe Titanic Competition on KaggleMATLAB is no stranger to competition… 
Advice for Making Prettier Plots
11 Jun 2015  6:27 amA few years ago, Jiro wrote a popular post for making pretty plots on this blog. We also host a blog specifically about graphics by Mike. And with the R2014b release of MATLAB came an updated graphics system that Dave described last year in a 3 part series: Part 1, Part 2, and Part 3.Even with that, I continue to hear questions about how to accomplish certain tasks, such as using a symbol to indicate degrees. This post contains a collection of a few tips that may help you update your plots to match more closely what you are trying to convey.ContentsPlotting Temperature DataAdd Y Label with… 
Including External Code in Published Document
22 May 2015  9:40 amWhen I wanted to show you a code snippet in the past, I displayed the code in the text of my blog post.ContentsHow I Did ItHow I Do It NowLet's Try It Out!Will This Inclusive Feature Help You?How I Did ItTo do so, I often used the function type, or sometimes dbtype (if I wanted to refer to line numbers). In this way, I did not require you to download code from elsewhere to see what I was discussing.How I Do It NowNow using R2015a I can take advantage of a new feature of the markup language for publish. Using the include markup allows me to include external content. How do I do this? With the…

Homeschool Math Blog

Math Mammoth Grade 7 (prealgebra)
25 Jun 2015  2:06 pmMath Mammoth Grade 7 and 7B are available now  as downloads! Printed books and a CD version will follow soon. Check www.mathmammoth.com/complete/grade_7.php for description and samples. 
Homeschooling  history and state today
16 Jun 2015  3:19 pmHere's an interesting infographic about homeschooling  its history and its state today. Click to enlarge. :) Source: EarlyChildhoodEducationDegrees.com 
Homeschooling With Greater Joy and Peace
11 Jun 2015  12:55 pmThis is a guest post by Alecia Baptiste.Some days homeschooling our children can be amazing. We wake up in the morning feeling rested, excited about facing the challenges of the new day and eager to explore with our children. On those days our children are excited about learning and cooperative. And don't you love it when your children have those “Aha” moments? When they finally get that math concept or they make some connection between facts or after months of struggling to read, you see them lying contently in bed reading a book. On those day we think to… 
Math Mammoth printed versions in color
4 Jun 2015  6:05 amDid you know? Math Mammoth grades 13 printed books are now available as color versions through Rainbow Resource.Currently you need to access them via their search function: search for "math mammoth color". Hopefully they'll get their own category page soon. 
The best math card game ever
4 Jun 2015  6:02 amIt's summertime, in my heart!!!!!!!And here's a GREAT math game to play in summertime  or any time, really:The game that is worth 1000 worksheets This game adapts itself to a GREAT variety of math topics: simple addition, subtraction, multiplication, fractions, many operations, integers... Have fun!

Let's Play Math!

Infinite Cake: Don Cohen’s Infinite Series for Kids
2 Jul 2015  4:42 amMath Concepts: division as equal sharing, naming fractions, adding fractions, infinitesimals, iteration, limits Prerequisite: able to identify fractions as part of a whole This is how I tell the story: We have a cake to share, just the two of us. It’s not TOO big a cake, ‘cuz we don’t want to get sick. A 8 × 8 or 16 × 16 square on the graph paper should be just right. Can you cut the cake so we each get a fair share? Color in your part. How big is your piece compared to the whole, original cake? But you know, I’m on a diet, and I just… 
A Review for my Daughter’s Novel
1 Jul 2015  11:24 am“… a captivating fantasy story with a wellthoughtout plot … people who like medievalstyle fantasies with wraiths, spirits, and even an attacking swamp tree will enjoy the story. I certainly did, and the excitement, adventure, and suspense will easily keep the reader’s attention …” — Wayne S. Walker Home School Book Review 
Math Teachers and Homeschool Bloggers: We Want You!
15 Jun 2015  4:47 am[Photo by Olga Berrios via flickr.] Do you have a favorite blog post about math activities, games, lessons, or handson fun? The Math Teachers at Play (MTaP) math education blog carnival would love to feature your article! We welcome math topics from preschool through the first year of calculus. Old posts are welcome, as long as they haven’t been published in past editions of this carnival. Click here to submit your blog post. Don’t procrastinate: The deadline for entries is Friday, June 19. The carnival will be posted next week at CavMaths. Would You Like to Host the Carnival? 
Socks Are Like Pants, Cats Are Like Dogs
12 Jun 2015  1:18 pmSupport This New Book from Natural Math Socks Are Like Pants, Cats Are Like Dogs by Malke Rosenfeld and Gordon Hamilton is filled with a diverse collection of math games, puzzles, and activities exploring the mathematics of choosing, identifying and sorting. The activities are easy to start and require little preparation. Free download: three activities from the book. Read more at the crowdfunding site. The publisher’s crowdfunding goal is $4,000. The book is almost ready to go to press, and I can hardly wait to see it! Get monthly math tips and activity ideas, and be the first to hear… 
Review Game: Once Through the Deck
9 Jun 2015  1:30 pm[Feature photo above by Shannon (shikiro famu) via Flicker (CC BY 2.0).] Math Concepts: basic facts of addition, multiplication. Players: one. Equipment: one deck of math cards (poker or bridgestyle playing cards with the face cards and jokers removed). The best way to practice the math facts is through the giveandtake of conversation, orally quizzing each other and talking about how you might figure the answers out. But occasionally your child may want a simple, solitaire method for review. How to Play Shuffle the deck and place it face down on the table in front of you. Flip the cards…

ChapterZero

Installing Spark with Hadoop 2 using sparkec2
1 Jul 2015  10:28 amYARN does not seem to be configured correctly when you use the sparkec2 script to install a Spark cluster on EC2. Here’s my short workaround for getting YARN to work (with a simple python script at the bottom): launch a cluster with e.g. sparkec2 k <keyname> i <keyfile> s instancetype=<type> placementgroup=<placementgroupname> hadoopmajorversion=2 copyawscredentials launch <clustername> This automatically copies your AWS access keys into the coresite.xml configuration file for Hadoop so you can pull data from S3 into hdfs. Unfortunately,… 
My thoughts on the confederate flag
22 Jun 2015  1:42 pmThe Confederate flag is literally a symbol of treason. Not only that, but the most treasonous act in the entire history of the United States. Anyone who buys into the ‘States Rights’ explanation for the Secession either doesn’t understand what rights we’re talking about, or doesn’t care: the right to slavery. Elide motivations all you want, the southern states withdrew because with the entry of the western states to the union and the North blocking the expansion of slavery into the west, they felt their way of life and economic foundations being threatened. 
A quick thought on Supernatural and some other tv shows
24 May 2015  10:51 pmJust finished season 9 of Supernatural. You’ve got to give that show credit for being one of the few that *demands* a deus ex machina ending. Anything less, after all this fighting over who’s going to take God’s place and Castiel’s moments of mysterious grace, would be a let down. I can’t wait to see what season 10 has to offer. While we’re on the topic of shows that appropriate Christian mythology for their own ends, I want to say that Messengers is crap. We’re supposed to believe that God turned some humans into angels and sent the Devil to earth to… 
Marco Polo: I approve, so far
14 May 2015  11:01 pmI finally got around to watching Marco Polo. This is perhaps surprising news, as anyone who knows me could guess this would be right up my alley: almost superhuman martial arts (at least in the promo material), an eastern setting, and a clash of nations … I’m on episode three, and I’m suprised to say that I’m not at all disappointed! I’m enjoying seeing the tensions building within his empire as Kublai Khan tries to preserve the Mongolian spirit of his empire while incorporating the disparate cultures and religions of his client states. In particular, Khan wants… 
Wilkinson on a priori error analysis
21 Apr 2015  4:47 pmI’ve been reading a lot of NLA lately (e.g., a recent paper on communicationavoiding RRQR), and necessarily brushing up on some details I paid scant attention to in my NLA courses, like the details of the different types of pivoting. Which led me to this quote by a famous numerical analyst: There is still a tendency to attach too much importance to the precise error bounds obtained by an a priori error analysis. In my opinion, the bound itself is the least important part of it. The main object of such an analysis is to expose the potential instabilities, if any, of an algorithm so that…

Computational Complexity

Goodbye SIGACT and CRA
2 Jul 2015  4:56 amTuesday I served my last day on two organizations, the ACM SIGACT Executive Committee and the CRA Board of Directors. I spent ten years on the SIGACT (Special Interest Group on Algorithms and Computation Theory) EC, four years as vicechair, three years as chair and three years as exchair, admittedly not so active those last three years. SIGACT is the main US academic organization for theoretical computer science and organizes STOC as its flagship conference. I tried to do big things, managed a few smaller things (ToCT, a few more accepted papers in STOC, poster sessions, workshops, moving… 
When do we care about small improvements?
28 Jun 2015  7:21 pmA while back complexity blog, Shtetloptimized , and GLL all blogged about the improved matrix mult algorithms (Complexityblog: here, Shtetloptimized: here, GLL here) of Stothers/Williams. It may have been on other theory blogs as well (if you know then let me know). We denote Matrix Mult Algorithm by MMA, and we use na instead of O(na). All the papers we refer to can be found either here or here. 1987: Cooper and Winograd get MMA in n2.375477 2010: Stothers gets MMA in n2.374 2011: Williams gets MMA in n2.3728642 (Williams and Stother were ind, though… 
Changing STOC
25 Jun 2015  5:33 amAt the recently completed STOC and the previous FOCS, much of the discussion revolved around reforming the conferences. You read the discussion and comments on Windows on Theory and I've also been cc'd on several very long email threads. STOC, as the flagship conference of ACM SIGACT, should be the focal point of the community, the place where researchers circle their calendars and make sure they attend the event. You see that at SOSP for the systems community or SIGCOMM for networking. But not STOC, smaller than it was thirty years ago when the theory community had a fraction of the people… 
Learning from teaching a HS student Schur's theorem on change
22 Jun 2015  11:15 am(All the math this post refers to is in my manuscript which is here.) Recall Schur's theorem on making change as stated in wikipedia and other source: Let a1,...,aL be rel prime coin denominations. Then the number of ways to make n cents change is nL1 /(L1)!a1a2...aL + Θ(nL2). The proof I knew (from Wilfs book on generating functions) was not difficult; however,it involved roots of unity, partial fractions, Taylor series, and Generating functions. I needed to present the proof to a HS students who was in precalc. The writeup above is what I finally came up with. A few… 
FCRC Complexity
18 Jun 2015  9:59 amOn Wednesday at FCRC, the Complexity, STOC and EC (Economics and Computation) conferences all have sessions, a smorgasbord of talks, but tough decisions on what session to attend. Here's one you might have misses, the EC paper Why Prices Need Algorithms by Roughgarden and TalgamCohen that has a nice application of complexity to the existence of equilibrium, not whether the equilibrium is hard to compute but whether it exists. Roughly Roughgarden and TalgamCohen show if a certain kind of a pricing equilibrium holds then one can get an efficient algorithm for a certain kind of reduction.

Natural Blogarithms

It’s okay to feel inferior
2 Jul 2015  7:35 amFind value in being the wall, when alone, you are only a brick Not all posts on this site will have to do with math, teaching, or technology. For example, today, during my time alone with God, I was impressed to record the following in my journal. It may not be exceedingly profound, but I don’t want to soon forget it because I am often, easily wounded when my ego takes a hit. Do not let your feelings push you to overreact when you encounter someone that excels at something you do not. For one, you must remember that your value, whether to yourself, to the world as a whole, or… 
My First Program from 1987
20 Apr 2015  5:37 pmBack in 2010, I posted a brief story about one of the highlights of my childhood, the first time I was able to get a program to successfully compile and run on my Apple IIe clone, the Laser 128. Here’s the tale again: I was subscribed to a children’s magazine called “321 Contact” and in the back of every issue were a couple of programs in BASIC (as in the BASIC programming language). I can still vividly remember one of the most exciting and exhilarating moments of my childhood, perhaps of my whole life. The moment came after seemingly endless hours of trying to get the… 
Cheryl’s Birthday – Singapore Math Problem
14 Apr 2015  3:05 pmThis math problem went viral yesterday so I had my kids tackle it. It took us all working together but we got a solution. Here’s the problem that appeared all over reddit, Facebook, and Twitter: Don’t read any further unless you want to know the answer. #spoilers … Hint 1: Albert’s first statement rules out any month with a unique day (18 or 19) since he’s certain Bernard doesn’t know the exact date. If Bernard had been told 18, for example, that means he could know it was June 18, but Albert is certain Bernard doesn’t know so it… 
Dean’s Corner – First Edition
29 Mar 2015  4:11 pmI’m a little late in getting around to updating my blog (Natural Blogarithms) on my recent change in position at Wayland. As of February 23, 2015, I am now the Dean of the School of Mathematics and Sciences. (See Press Release) Below is my first contribution to the “quarterly” newsletter. I hope you’ll check it out and peruse the rest of the newsletter so you see what’s up in our school Dean’s Corner “I’m coming home…to the place where I belong!” I actually remember it vividly, the spring of 1994, when I first walked onto the Wayland campus… 
The Mathematics of Love
13 Feb 2015  2:59 pmWith Valentine’s Day around the corner, the whole of humanity is looking for answers on how to be truly happy in love, right? And, certainly everyone is thinking of using the most powerful tool ever devised for answering life’s most difficult questions: Mathematics, of course Thanks to Hannah Fry’s TED talk posted today, we learn that Mathematics actually has a lot to say about optimizing your chances of finding love. I’ve always been a big fan of hers, following her on Twitter (@FryRsquared), but this was an especially interesting talk. In honor of…

eon

baby rudin
19 Jun 2015  11:15 amDefine a real valued function on the reals by [tex] f(x):=\begin{cases} 0, & x \not\in \mathbb{Q} \\ \frac{1}{q}, & x = \frac{p}{q}, \gcd(p,q)=1, q >0 \end{cases}[/tex]. Where is this function continuous? The problem appeared in Hyman Bass’s article in the June 2015 issue of the notices of AMS. I casually dismissed it as another standard problem, having “seen it somewhere before” but it caught the eye of one colleague and another colleague, an analyst, said it was nonroutine. Given the interest, I thought about where I could have seen it and my first instinct was… 
two thousand years of combinatorics
19 Jun 2015  10:29 amby Don Knuth is the opening chapter to Combinatorics:Ancient & Modern, which according to its preface is perhaps the first booklength survey of the history of combinatorics. Knuth’s chapter is actually taken from his Art of Computer Programming Volume 4 and contains the following two snippets. John Wallis was credited for explicitly considering the null case of combinations. This quote is from his Discourse of Combinations (1685): It is manifest, that if we would take none, that is, if we would leave all; there can be but one case thereof, what ever be the number of things… 
An identity
28 Mar 2015  8:54 pmThe following problem is apparently a bonus question for 13 year olds at a local girls school: Evaluate the sum [tex] \displaystyle \frac{1\frac{1}{2}+\frac{1}{3}\frac{1}{4} + \cdots + \frac{1}{99} – \frac{1}{100}}{\frac{1}{1+101}+ \frac{1}{2+102} + \cdots + \frac{1}{50+150}}. [/tex] It’s not that easy if you ask me. I had to work out the following identity first before I managed to solve it. [tex]\displaystyle \sum_{k=1}^N \frac{1}{2k1} – \frac{1}{2k} = \sum_{k=1}^N \frac{1}{k+N}. [/tex] The identity can be proved via induction. 
3.14.15 and Einstein
26 Mar 2015  6:42 pm14 March 2015, was supposed to be the Pi day of the century — for obvious reasons. 14 March is also Einstein’s birthday, and 2015 interestingly marked 100 years of the theory of relativity. I liked this article written by Jeff Edelstein that described how Einstein tutored a 12 year old girl in maths. As Edelstein wrote, this could be a hoax, but personally for me, some stories (or myths) are worth retelling. There are two lovely quotes in the article, both recollections of the girl being tutored. He’d say we’re not going to bother with the homework problem. First he’d give… 
Under Promise and Over Deliver
26 Mar 2015  6:20 pmMr Lee Kuan Yew, the man responsible for making modern Singapore what it is today, passed away on 23 March 2015, aged 91. Incidentally it was also Emmy Noether’s birthday. I have wanted to start off my class by showing the google doodle but the lesson plan had to change in view of the more sombre and relevant news. The mathematical exploits and Emmy and Sophie will have to wait for another day. Throughout this whole week of national mourning, much have been wrote about his sagely advice. In particular, the current minister of defence said that Mr Lee often reminded the younger ministers…

WordPress Tag: Mathematics

Math HW(04/07/15)
3 Jul 2015  9:01 pmDear Learners Construct the following: Construct a rhombus CLUE in which CL = 7.5 cm and LE = 6 cm. Construct a quadrilateral BEAR in which BE = 6 cm, EA = 7 cm, RB = RE = 5 cm and BA = 9cm. Measure its fourth side. Is it possible to construct a quadrilateral ABCD in which AB = 3 cm, BC = 4 cm, CD = 5.4 cm, DA = 5.9 cm and diagonal AC = 8 cm? If not, why? Is it possible to construct a quadrilateral ROAM in which RO=4 cm, OA = 5 cm, ∠O=120°,∠ R = 105° and ∠A = 135°? If not, why? Construct a quadrilateral NEWS in which NE = 7cm, EW = 6 cm, ∠N = 60°, ∠E = 110° and ∠S = 85°. 
Fibonacci Sequence & a Cool Pattern
3 Jul 2015  8:04 pmabyssbrain:This is a simple algebraic proof of a certain pattern of Fibonacci triples that I have po 
Fibonacci Sequence & a Cool Pattern
3 Jul 2015  7:09 pmImage from ShutterStock. FIBONACCI SEQUENCE The Fibonacci sequence adds consecutive terms: 1 1 1 + 1 = 2 2 + 1 = 3 3 + 2 = 5 5 + 3 = 8 8 + 5 = 13 13 + 8 = 21 21 + 13 = 34 34 + 21 = 55 55 + 34 = 89 Since the last two terms were 55 and 89, we would add these together to get 89 + 55 = 144. Then you would add 144 and 89 to make 233, and so on. I saw a cool pattern involving the Fibonacci sequence recently at the Mathemagical Site: Fibonacci Triples via Mathemagical Site This involves Fibonacci triples. A Fibonacci triple consists of three consecutive numbers from the Fibonacci sequence, such as:… 
Auto Draft
3 Jul 2015  3:46 pm 
Random Thoughts
3 Jul 2015  9:42 amThis blog is really about me asking questions. Seems really boring, I know. In fact, it probably will be. The point is, the typical sciencelover I am, I’ve done an embarrassing amount of research on topics that give me headaches. This blog is going to be about them. Wait! Don’t close the page just yet. What I want to do with this is to briefly explain the concepts that I have researched on , but more importantly, cover my own journey through their complex beauties (or what normal people call equations). I want to focus on thoughts I had on theories, the implications I found…

MathNotations

A "Fitting" Celebration of the Fourth!
3 Jul 2015  5:45 amPosted on twitter.com/dmarain@gmail... A "Fitting" Celebration of the Fourth 7,4,15,? The next term could be 40. Explain using the quoted hint! COREFLECTIONS Students, as most people do, tend to look for simple arithmetic patterns like "subtract 3, add 8" but this problem can be "fitted" into a quadratic pattern. Common Core and STEM strongly recommend that math educators include Least Squares methods into our curriculum using appropriate technology. But algebra teachers can seize the opportunity as well to fit a parabola thru the points (1,7), (2,4) and… 
Catch A Few "Rays" for July 4th
3 Jul 2015  4:19 amNot going to add much to the diagram above but STEM is all about APPLYING math and science, yes?OK, so the expression for the angle labeled y is y=90x!The graphic isn't great so I hope you can read that angle! I left the diagram as openended as possible so students and educators can make conjectures and "assumptions". Feel free to comments or send me a direct email via the Blogger Contact Form. HAPPY FOURTH!VISIT ME DAILY ON TWITTER AT twitter.com/dmarain 
(0,0),(2,3) opp vert of a rectangle. Max area? And it's not 6!
29 Jun 2015  10:23 amJust posted this problem on Twitter. Might not get seen by too many educators/students who are on summer break here in US but when an idea comes to me I have to publish it or it will perish!My passion is writing questions which promote divergent thinking and dialogue while developing conceptual understanding of the Big Ideas of Math. And of course encouraging all 8 Mathematical Practices simultaneously!Since most texts have a dearth of these nonroutine questions I found myself creating my own when I was in the classroom. Now I share them with my online "family".COREFLECTIONSSo the answer… 
A June 9th 2015 Riddle
9 Jun 2015  8:52 amAt ~11:41 am (EDT/ "GM"T4), today's date will "mean" something! Explain! Three embedded hints may help if you know what I "mean". Comment with your solution or email it to me via the Blogger Contact Form in sidebar... VISIT ME DAILY ON TWITTER AT twitter.com/dmarain 
Riddle of The El Wa and The Re St
2 Jun 2015  10:03 amDEA HA RIDDLE Show that the length of the El Wa is THREE times the radius of the Re St! I know I can't be the only Potterphile on the Math Blogosphere! Maybe your students will want to join the club! VISIT ME DAILY ON TWITTER AT twitter.com/dmarain

Math Bootcamps

Making two way tables
20 Jun 2015  10:35 amTwo way tables, also known as contingency tables, show frequencies (counts) as they relate to two variables. As usual, we will use an example to see how they work! Example Suppose that a company is doing market research on a new product and have selected a random sample of potential customers to help choose the most effective TV commercial. Out of the 180 people in the sample 65 viewed the first version, 30 viewed the second version, and the remainder viewed the third. Of those who viewed the first version, 25 indicated that they were likely to buy the product while the rest said they were… 
Scatterplots on the TI83 or TI84 graphing calculator
19 Jun 2015  4:04 pmScatterplots are used to visualize the relationship or association between two variables. For example, can you say in general that studying more will result in higher grades? We could investigate this by collecting data on how long students studied and perhaps their grade on a final exam and then creating a scatterplot. The overall pattern would help us determine what kind of association time spent studying has with final exam grades. On the TI83 or 84 series of graphing calculators, getting a scatterplot is pretty easy. Let’s use an example data set to walk through the process. Example… 
How to read a boxplot
14 Jun 2015  11:33 amBoxplots are a way of summarizing data through visualizing the five number summary which consists of the minimum value, first quartile, median, third quartile, and maximum value of a data set. If a data set has no outliers, a boxplot will be made up of the following values. But, if there ARE outliers (those are values that fall far from the main pattern of the dataset), then a boxplot will instead be made up of the following values. As you can see above, outliers (if there are any) will be shown by stars or points off the main plot. If there are no outliers, you simply won’t see those… 
Common shapes of distributions
13 Jun 2015  5:18 pmWhen making or reading a histogram, there are certain common patterns that show up often enough to be given special names. Sometimes you will see this pattern called simply the shape of the histogram or as the shape of the distribution (referring to the data set). While the same shape/pattern can be seen in many plots such as a boxplot or stemplot, it is often easiest to see with a histogram. In the examples below, we will look at each of these shapes and some of their important properties. Bell shaped / symmetric Histograms that are bell shaped/symmetric appear to have one clear center that… 
How to read a stemplot
13 Jun 2015  10:42 amStemplots are sometimes called stem and leaf plots because each number in the original data set has been broken up into two pieces: a stem and a leaf. When we read stemplots, we need to keep this in mind. For any stemplot, you will see the leaves on the right hand side of the bar. Each leaf represents a single value in the data set. Using this idea, let’s try to answer some questions. Answering questions with a stemplot So let’s suppose that someone has been selling their old baseball card collection online card by card. They have kept track of all of their sales so far and…

Institute for Mathematics and Computer Science

IMACS Wishes You aHappy Independence Day!
2 Jul 2015  6:06 amThe IMACS Blog is taking a short summer hiatus and will return next month. Have a safe and happy 4th of July! Looking for an incredibly fun summer experience that exercises the mind? Check out IMACS’ HiTech Summer Camp! Like IMACS on Facebook for the latest information about our local classes and online courses. 
Slowing Down to Get Ahead in Math
3 Jun 2015  10:00 pm"The classrooms that produce high achieving students are those in which students work on deep, rich mathematics through tasks that they can take to any level they want. No one is told what level they can reach and no one is held back by narrow questions that limit students’ mathematical development and creativity." —Jo Boaler, Professor of Mathematics Education, Stanford The above quote comes from a recent article by Stanford professor Jo Boaler. Professor Boaler, through her Youcubed organization, advocates for valuing depth and creative problemsolving over computational… 
Motivation and the Gifted Child
6 May 2015  10:00 pm"My kid could finish his math homework in no time if he would just do it, but instead he drags it out for an hour, and that’s with me having to nudge him through it." Sound familiar? Parents and teachers often assume that a gifted child will automatically be a high achiever given the child’s high abilities, so it comes as a surprise when he or she underachieves. There can be a variety of reasons for underachievement, but a common cause is lack of motivation. Whereas bright students often enjoy working toward external recognition for their accomplishments, gifted learners… 
11YearOld Davidson Young Scholar Scores Perfect 800 on SAT Math Test
8 Apr 2015  10:00 pmIMACS student Shiva Oswal and his parents pose in front of the magnificent Atlantis Hotel on a family trip to Dubai. When fewer than 1% of 2014 collegebound high school seniors attain a perfect 800 on the math section of the SAT, you know that you’ve met someone special when he’s achieved that amazing feat before even cracking the teen years. That someone is Shiva Oswal, a precocious 11yearold from Northern California who recently earned that lofty score as part of a program through Johns Hopkins’ Center for Talented Youth (CTY) called the Julian C. 
Three Tips for Nurturing the Good Habit of Delayed Gratification
12 Mar 2015  6:50 amThe ability to delay gratification has been shown in various studies to be a strong predictor of academic success, even more so than IQ. Can parents help nurture this ability in children? Yes! But it takes more than a didactic approach. Many parents are probably familiar with the famous marshmallow experiment where young children were given a choice between one marshmallow now or two if they could wait 15 minutes. It’s helpful to recall that the original experiment focused not on whether the children could wait but rather on what strategies helped them to wait. Rochester University…

mathrecreation

regular polygons, intersecting regularly
3 Jul 2015  11:54 amLooking through the chapter on the number 5 in the really engaging book Single Digits: In Praise of Small Numbers, by Marc Chamberland, I came across an image and description of Kepler's pentagonal tiling, which looks like this:Kepler Pentagonal TilingThis tiling is made of pentagons, pentagrams, decagons, and fused decagons. Both the decagons and the fused decagons can be made from combinations of regular pentagons and dented pentagons (by dented, I mean in the way described here), so this tiling could also be made with pentagons, dented pentagons, and pentagrams.Decagons and fused… 
regular polygons, dented and sliced
12 Jun 2015  8:13 pmA while ago, l noticed that sliced up octagons made nice tiles.In particular, octagons that are split in a particular way into a dented octagon and a rhombus are pretty neat. These rhombuses are formed from so that they share with the octagon two adjacent sides of the octagon. The dented octagon is formed by slicing off the rhombus. Four of those dented octagons can be put around a vertex to form a pinwheel pattern, and four of the rhombs can be added to that pinwheel to make a bigger octagon.You can do this sort of rhombic slicing with any regular polygon with more than 4 sides (you could… 
octo rhomb
30 May 2015  1:28 pmRegular octagons cannot be used to tile by themselves  if you try, you will find there are square gaps that need to be filled.If you slice a rhombus off your octagon, you'll end up with two tiles  a rhombus and a dented octagon.Each of these shapes can be used to tile by themselves, or tile together. The rhombbyitself tiling is easy to visualize (imagine a squashed grid), here is the dentedoctagon tiling:Now, here's something else: you can take four of these rhombically challenged octagons to make a bigger octagon:You get a nice tree shape if you remove two rhombs from the original… 
octagonal iteration with GSP
14 Apr 2015  6:51 pmHere is a little GSP iteration that I came across that I thought was worth sharing.Start with a line segment  this provides the only "free" points in the sketch  everything else is constructed on top of this, starting with a square based on AB.Next, construct the center of the square, and a circle centered on that square's center and diameter equal to the diagonal of the square.Next, construct points on the circle midway between the points provided by the corners of the squares.We'll iterate by mapping the original line segment onto pairs of these points (in GSP you can select the free… 
are you experienced?
25 Mar 2015  7:52 pmDon't despairA search for "math" in the iTunes store is likely to disappoint (maybe "maths" or "mathematics" would provide better results). I haven't tried Math Drills Lite  it is likely the last thing I would want to download, yet it comes up first.A sad situationBut this is happy post, because there is a math app, well, more of an interactive book, that is engaging, interesting, well written, and attractively designed, that conveys mathematics as its practitioners and enthusiasts see it: beautiful and creative, not dry and confusing. Mathema, written by two…

MathBlog

The Corinthian Colleges Scandal, STEM Shortage Claims, and Minorities
12 Jun 2015  6:00 amThe United States Department of Education made headlines Monday (June 8, 2015) announcing that it would forgive the federal student loans for former students of Corinthian Colleges Inc., the nowdefunct forprofit postsecondary education company that operated the Everest, Heald College, and WyoTech chains of colleges. According to news reports, the total bill could reach $3.5 billion if all federal loans to Corinthian students are forgiven. The Department of Education had fined Corinthian’s Heald College, which operates mostly in California, $30 million in April for allegedly providing… 
Simpson’s Paradox and Sex Discrimination
25 May 2015  6:00 amThe Lawsuit Big Name University is facing a lawsuit alleging sex discrimination in admissions to its graduate programs. Last year, 1440 men and 1440 women applied for admission to graduate school at Big Name. Twohundred and forty (240) men, but only onehundred and eighty (180) women were admitted. The evidence seems clear cut; Big Name is discriminating against women. Alarmed at the billion dollar class action lawsuit, the Board of Trustees calls upon the distinguished Ronald E. Fisher Professor of Statistics S.O. Whiteman to review the admissions data. Professor Whiteman carefully examines… 
Review of Statistics Done Wrong: The Woefully Complete Guide
4 May 2015  6:00 amStatistics Done Wrong: The Woefully Complete Guide by Alex Reinhart Paperback: 176 pages Publisher: No Starch Press; 1 edition (March 16, 2015) Language: English ISBN10: 1593276206 ISBN13: 9781593276201 Product Dimensions: 8.1 x 5.9 x 0.5 inches My Rating: 3/5 Introduction Statistics Done Wrong: The Woefully Complete Guide by Alex Reinhart, a graduate student in statistics at Carnegie Mellon University, is a guide to many common errors in statistical analyses in scientific research papers with many examples drawn mostly from the biology and medical research literature. There is also a… 
Review of StatSpotting: A Field Guide to Identifying Dubious Data
13 Apr 2015  6:00 amStatSpotting: A Field Guide to Identifying Dubious Data Joel Best University of California Press Berkeley and Los Angeles, California 2008, updated 2013 158 pages (Paperback) My Rating: 4/5 Introduction StatSpotting: A Field Guide to Identifying Dubious Data by Joel Best, author of Damned Lies and Statistics and More Damned Lies and Statistics, is a detailed, practical handbook of warning signs for false or misleading numbers and statistics and in some cases methods to determine if the numbers and statistics are false or misleading. We can say that a number or statistic is misleading if the… 
Review of More Damned Lies and Statistics: How Numbers Confuse Public Issues
6 Apr 2015  6:00 amMore Damned Lies and Statistics: How Numbers Confuse Public Issues By Joel Best University of California Press Hardcover, 217 pages ISBN: 9780520238305 September 2004 $29.95, £19.95 My Rating: 3/5 Introduction In this new world of Big Data, Data Science, and the computing power of a 1980’s Cray supercomputer in every pocket, we are inundated with more and more statistics and mathematical models based on more and more “data.” This torrent of real science and pseudoscience (sometimes officially sanctioned) includes the dubious financial models that contributed to the 2008…

MathFour

Smurfy Student Traits You See in Yourself
3 Jul 2015  9:00 amThis past year I’ve had the incredible joy of teaching a group of students with diagnosed neurological differences. I like to think they learned from what I had to offer them. However, I learned so much more from them. Specifically about myself. Girl, Intensified One of the coolest things about this student population is that their differences make some of their characteristics much more intense. If a student was inclined to frustration, and got frustrated, he would get really really frustrated! Often these intense characteristics were so dramatic that it would drown out other… 
Periscope DOWN!
16 Jun 2015  3:50 amSee a full list of my Periscope videos here (including current ones not yet posted in a recap). I’ve started a new thing: live streaming on Periscope. And since I’ve done it six times in a row (and still love it), it just might stick. But this means 5 new videos every week. So there’s gotta be a place to put them all. Instead of posting this every day (seems overkill and a little annoying), I’m thinking I’ll do a weekly recap. That way we can have them all in a nice spot, and still remain sane. So here’re last week’s scopes and brief recaps: Peg… 
The Verbal Math Lesson – Periscope Giveaway!
11 Jun 2015  2:48 amThis morning on Periscope, I talked about The Verbal Math Lesson series of books by Michael Levin and Charan Langton. They sent me a handful of these a while back. I took a gander at them and then, like most free stuff I’ve been sent, they’ve sat around the MathShack. Enter the Periscope Giveaway! I’ve started Periscoping my random stuff daily at 5am central time (download iOS or Android app here). Now I can share these things quickly and easily. And when I have extras, I’m going to give away the spares! You might know that I’ve never done a giveaway here on… 
10 Questions No Educator Should Ever Think About
8 Jun 2015  3:30 pmI was knocking around Twitter just now and I ran into this: 10 questions every educator should always be thinking about… by Justin Tarte. I’m in brain dead mode. It’s the last day before inservice for summer school. I’ve had only one week off. So when I read his first question, I hit a speed bump: “What percent of your students are going beyond just compliance and are actually cognitively engaged in deep selfdriven and relevant learning?” Huh…? It’s all good stuff, I have to give him that. But he used so many long words. Dumbed down for the brain dead. So I thought I… 
Start with “Why” when You Teach
8 Jun 2015  4:04 amA small word doesn’t get any bigger than “why?” “Why is the sky blue?” “Why do I have to eat breakfast?” “Why do I have to clean my room before going to the dance?” “Why do I have to go to work at 8am?” “Why do I have to die before seeing my grandkids grow up?” And, of us, math students ask: “Why do I have to learn this?” I’ve talked about answering the question “when am I going to use this?” before. And this “why” question is merely a rewrite of that one. Why are we here? All the why questions above pale in comparison to…

Motion Math

Librarians love Motion Math
29 Jun 2015  11:02 amThe Motion Math Educator has been selected as a 2015 Best App for Teaching and Learning by the American Association of School Librarians! Are you a librarian or educator? If so, you can sign up for a... [[ This is a content summary only. Visit my website for full links, other content, and more! ]] 
Motion Math expanding…
3 Jun 2015  3:01 pmAs reported today on EdSurge, we’ve received a new grant from the Bill & Melinda Gates Foundation to expand our edtech efficacy platform, which measures which digital activities help... [[ This is a content summary only. Visit my website for full links, other content, and more! ]] 
Cupcake! Edu Classroom Contest Winners
26 May 2015  11:28 amGiven all of the amazing feedback we’ve heard from teachers around Motion Math: Cupcake! Edu, we had really high expectations for our classroom contest. The submissions and high scores surely didn’t... [[ This is a content summary only. Visit my website for full links, other content, and more! ]] 
Say “Wrong answer” while encouraging growth mindsets
22 Apr 2015  1:57 amOne of the great advantages of digital learning tools is the ability to give learners immediate feedback, including negative feedback. Whether a student sees negative feedback as a final judgement on... [[ This is a content summary only. Visit my website for full links, other content, and more! ]] 
Motion Math: Cupcake! Edu and our Classroom Cupcake Contest
21 Apr 2015  10:57 amToday we’ve released the classroom version of our new game: Motion Math: Cupcake! Edu. Students create their own cupcake delivery business, learning about the coordinate system, unit rates,... [[ This is a content summary only. Visit my website for full links, other content, and more! ]]

Mathforallgrades Blog

Jun 17, Exponents rules
17 Jun 2015  12:22 amExponents rules enable arithmetic expression of base and index. 
May 26, Distributiveproperty
26 May 2015  3:18 amdistributive property distributes an arithmetic operation over others such as addition, multiplication.. 
May 12, 10thgrademath
12 May 2015  12:11 am10th grade math consisting of algebra, arithmetic, geometry, coordinate geometry, statistics. 
Feb 9, algebra 1 help
8 Feb 2015  10:04 pmalgebra 1 help includes data analysis tools, functions, equations, inequalities, exponents, polynomials, quadratic equations 
Feb 5, Algebra lessons
4 Feb 2015  11:07 pmalgebra lessons in one variable, two variables solved using substitution method, elimination method

MIND Research Institute Blog

The Best Lesson: Learning from Failure
2 Jul 2015  9:00 amInterview with Greg Toppo and Matthew Peterson Part 2 Today we continue sharing the recent conversation between MIND Research Institute cofounder Matthew Peterson and Greg Toppo, the USA Today education reporter. Toppo’s new book, The Game Believes in You: How Digital Play Can Make Our Kids Smarter, takes a deep dive into the philosophy and realworld implications of gamebased learning. Peterson and Toppo spoke several times while Toppo researched the book, and recently sat down again to discuss the importance of learning from failure, and gamebased assessments. Q. The idea of… 
Why We Should Worry Less About The "Achievement Gap"
30 Jun 2015  9:00 amBy: Brandon Smith, Senior Mathematician at MIND Research Institute It's very common to talk about raising student achievement. After all, this is where we see gaps. Doing poorly on an assignment or failing a test denotes "poor achievement" and stands out to teachers, parents and society. We naturally want to fix student achievement. But here's the twist: The achievement gap is not the root problem, and we hurt our students and ourselves by focusing on it. More than half of all fourth graders are not proficient in math, and the disparity among groups is alarming  54% of white students and… 
Summer Math Activities: What do Students do at a Math Camp?
25 Jun 2015  9:00 amBy: Dana Manners, Math Camp Director “Put your pencils and worksheets away! This is not your typical weeklong math experience. Say goodbye to classrooms and let's move math outside with a focus on problem solving and interesting puzzles.”Brandon Smith, Senior Mathematician MIND Research Institute is excited to present a camp full of fun summer math activities this year in Orange County, CA! Math Camp takes learning math out of the classroom and fosters a love of learning that encourages unique and innovative thinking. MIND’s math education experts have created activities that focus on… 
5 Reasons to Design a Math Game with Your Kids this Summer
23 Jun 2015  9:00 amBy: Marc Humpert, User Experience Designer The K12 Gameathon Challenge gives students the opportunity to design and build their own math game, film a video of it, and submit it online for everyone to see. At a fundamental level, the challenge is accessible and easy to implement as it is entirely selfdirected by the students themselves. Teachers, parents and guardians can play roles as mentors and facilitators to varying degrees of involvement, and the materials are inexpensive – students can make digital games with free tools like MIT’s Scratch and Adventure Maker, or… 
MIND’s Education Blog Earns National Honors
18 Jun 2015  9:00 amThis month, MIND Research Institute received twoSIPAwards for this blog, Sums & Solutions. More than 200 entries in 23 categories were judged for their excellence in editorial content. Sums & Solutions took home 3rd place honors for “Best Blog or Commentary” and for “Best Instructional Reporting.” In case you missed the winning entries, here they are: MIND’s entry in the “Best Blog or Commentary” category featured “A Latina’s Perspective: Preparing the Next Generation of STEM Latino Leaders” “IX Reasons Why STEM Needs Title IX: Lessons from Center Court”…

Teach Math for Free

Learn Problem Verification  Help for Math Problems Verification
26 Jun 2015  2:09 amHey there, I have always been looking for methods to cross verify problems (be it addition, subtraction, multiplication or division) while writing any competitive exam. I have also had my juniors approach me for some help with math problem verification. During exams, we are short of time and always want to ensure that answers are right. The importance of result verification is often under emphasized. You might be an ace mathematic question solver but verification is a critical process in itself.The concept of Vedic Mathematics has defined a few rules to assist in cross… 
Square a number instantaneously  In a single step !
22 Jun 2015  8:48 amHi there,Squaring numbers just got a lot easier. Today I am going to introduce you to the 10th Formula of Vedic Mathematics, called “Yavdunam”. We are going to use this formula to square numbers which are close to base numbers such as 10, 100, 1000, 10000 etc (or the powers of 10). The formula "Yavdunam = Number +/ (increase/decrease from base)/ (diff)2Let us consider numbers close to 100. Two sets of numbers could be formed – 1. More than 100 – 101,102,103……123….. 2. Less than 100  98,97,96,….83……. We are going to use this formula Yavdunam to solve “squares… 
Identify Geometric Shapes in Daily Life
14 Jun 2015  3:36 amHey there, I am always of the opinion that mathematics is an art form discovered by the humans. What is geometry? In my previous posts I had covered basics with regards to circles and triangles. Geometry is that branch of mathematics that deals with shapes, sizes etc. It is something that is found everywhere. From the moment you wake up in the morning to the time we finally hit the bed, math influences us in one form or the other. The difference is that some realize it and others don’t. I am no geometry tutor but I have made an attempt to capture the role of… 
CSPIT  CHARUSAT University results
13 Jun 2015  6:58 amCharotar University of Science and Technology released its results for the semester exams on 13.06.2015. The results are available on http://117.239.83.200:2020All the best ! 
Online Schools, Online Courses, degree online schools  A game changer?
5 Jun 2015  2:53 amOnline EducationThe education industry has evolved and progressed for the better to provide quality education to the end user. Although traditional universities are still being perceived as the best way to achieve a degree, online education provides a good alternative.What is online learning?Online learning course is one that you undertake by utilizing the internet as a medium without being physically present at a school/ university/ academy. The learner in this mode has the flexibility to access the study material at any given time without restrictions on place or time. Generally, there are…