• A Parent Testament: DreamBox and Blended Learning

    Updated: 2011-02-27 18:44:53
    You can’t believe how it makes us feel at DreamBox Learning when children make great leaps forward in their mathematics conceptual understanding through our online program; and parents discover the power of letting kids take control of their own learning. This is what it’s all about for us – it’s what makes us tick. I wanted [...]

  • Happenings – 2011 Feb 26

    Updated: 2011-02-26 22:08:28
    There is no way I should take the time to write this post… but I’m going to anyway. I want to talk about Freeman Dyson and problem solving and look briefly at some interesting mathematics… but I really should be working on two technical blog posts. I have long known of Freeman Dyson as the [...]

  • Picking holes in mathematics

    Updated: 2011-02-23 10:00:00
    Skip to Navigation about Plus support Plus Plus sponsors subscribe to Plus terms of use Search this site : Picking holes in mathematics by Marianne Freiberger Submitted by mf344 on February 23, 2011 in axiom binary tree Gödel's Incompleteness Theorem graph theory logic mathematical reality tree Zermelo-Fraenkel axiomatisation of set theory Kurt Gödel One thing that mathematics is equally loved and reviled for is its definite nature . Some people love the unerring hand of logic , but others loathe the lack of room for play . But once you penetrate to the very foundations of maths , the concept of true or false becomes a lot more slippery . The logician Kurt Gödel proved in the 1930s that if you set out proper rules for mathematics , excluding leaps of faith or intuition as admissible moves

  • Tuesday Teacher Tips: Slide It! Flip It! Turn It!

    Updated: 2011-02-23 03:36:07
    Welcome to the Tuesday Teacher Tips series! Each week we’ll highlight teaching and learning resources, ideas to use in the classroom, as well as things to ponder as you go about your teaching day. Rotations (turns), reflections (flips), and translations (slides) are concepts we’ve been recently working on in math. I’ve been searching for online resources [...]

  • Maths and sport: Countdown to the games

    Updated: 2011-02-21 11:25:58
    The Millennium Mathematics Project (of which Plus is a part) has just launched the Maths and Sport: Countdown to the Games website at http://sport.maths.org.read more

  • Why do you like maths?

    Updated: 2011-02-21 11:05:43
    There's a new special episode of one of our favourite maths podcasts — Math/Maths, produced by Peter Rowlett and Samuel Hansen. Peter talks to Ruby Childs, a recent maths graduate who is interested in what makes people like mathematics for an essay she is writing. She's particularly interested in why people chose to study maths further.read more

  • Wild About Math bloggers 2/11/11

    Updated: 2011-02-20 15:28:20
    Wild About Math Making Math fun and accessible Home About Articles Math contest problem links Videos Wild About Math bloggers 2 11 11 February 20th , 2011 by Sol The 2 18 edition of Wild About Math bloggers is at Equalis Welcome to Wild About Math Bloggers Carnival of Mathematics 74 The Tungsten Edition has been published at Walking Randomly . One link of particular interest was A cute result relating to sums of cubes This article shows a great generalization of the formula : 1^3 2^3 3^3 n^3 1 2 3 n 2. Be sure to read the comments to make the connection between the well-known result and the . generalization March 1 is World Maths Day . What is World Maths Day How does it work When is the registration deadline Denise at Let’s Play Math tells . all Irrational Cube has some nice visual

  • Happenings – 2011 Feb 19

    Updated: 2011-02-19 19:08:32
    It’s been a slow week. I’m still watching Babylon 5, but I’ve managed a little abstract algebra in the evenings. The kid looked at two-person zero-sum games this morning. Oh, no post went out last Monday… I was distracted by another obligation on Sunday… and I needed to think about just what I can do [...]

  • Tetrahedron Problems

    Updated: 2011-02-18 19:25:40
    My blog is getting more famous. Now I don’t need to look around for nice problems, for my readers often send them to me. In response to my blog about him, Sergey Markelov’s Best, Markelov sent me more of his problems. Here is a cute tetrahedron problem that he designed: Six segments [...]

  • A Good Opportunity to Build a Home-School Connection

    Updated: 2011-02-18 14:42:58
    Stacy Gordon wrote on our Facebook wall: Explain this to me please–Cathy wrote four adding 9 facts. Then she wrote two more adding 9 facts. Show the facts she wrote. Write a number sentence to show how many adding 9 facts Cathy wrote. First grader did work at school. Teacher marked it wrong, did not [...]

  • Math Seminar, Thursday, February 17, 2011

    Updated: 2011-02-15 19:17:01
    , , Behrend Math Blog Math Seminar , Thursday , February 17, 2011 By MICHAEL RUTTER on February 15, 2011 2:17 PM No Comments No TrackBacks School of Science : Math Seminar Dr . Amos Ong Lecturer in Mathematics Penn State Erie , The Behrend College Thursday , February 17, 2011 1:30 pm 168 Nick Finding the Exponential of a Matrix Given a square matrix A , we know the exponential of A helps to get the solution of the autonomous linear differential equation x'(t Ax(t But apart from the series definition of exp(A and using diagonalizability of A , we know of very few other methods to find exp(A This talk will use the Partial Fraction Decomposition of a rational function , in particular , the reciprocal of the characteristic polynomial of A to help us analyze and eventually find exp(A This talk

  • Tuesday Teacher Tips: Hooked on Puzzles

    Updated: 2011-02-15 17:14:16
    Welcome to the Tuesday Teacher Tips series! Each week we’ll highlight teaching and learning resources, ideas to use in the classroom, as well as things to ponder as you go about your teaching day. This year my class is hooked on puzzles! Not such a bad thing! They love the Sudoku puzzles and can’t get enough of [...]

  • Wild About Math bloggers! 2/4/11

    Updated: 2011-02-14 14:41:30
    Wild About Math Making Math fun and accessible Home About Articles Math contest problem links Videos Wild About Math bloggers 2 4 11 February 14th , 2011 by Sol The latest Wild About Math bloggers is at Equalis Here is last week’s edition . Welcome to February Speaking of February , Alex Bellos has a fun article about February , leap years , different calendar systems , the golden ratio and the golden . string Science News explores the science of . bike-sharing While the idea bike-sharing is gaining speed and subscribers at the 400 locations around the world where it has been implemented , there have been growing pains partly because the projects have been so successful . About seven percent of the time , users aren’t able to return a bike because the station at their journey’s destination

  • Happenings – 2011 Feb 12

    Updated: 2011-02-12 18:21:47
    Mathematically speaking, last weekend was wonderful. I saw the simple solution for simultaneously isolating and identifying linear dependence in a matrix. And I posted the simple solution last Monday. I am, as you might expect, disappointed that I didn’t see the simple solution immediately… but there you have it: I’m a human being. I gladly [...]

  • 30 Great Math Books as Recommended by Our Readers

    Updated: 2011-02-10 18:00:50
    Possibly related articles:Free Kindle Math Books Math Books reviewed and classified by area of mathematics The most enlightening Calculus books

  • Create your own mathematical mysteries

    Updated: 2011-02-10 14:36:41
    Skip to Navigation about Plus support Plus Plus sponsors subscribe to Plus terms of use Search this site : Create your own mathematical mysteries by Steve Humble Submitted by Rachel on January 19, 2011 in Giuga numbers hailstone sequence number theory prime number distribution Leonhard Euler was a Swiss mathematician of the 18th century . His mathematical work was very diverse and he created some beautiful mathematical surprises . You can read about some of his important discoveries on Plus . Recently , when reading Pi Unleashed I discovered this formula Euler created in 1738 linking the number pi to the primes : You will notice that the numerator of the fractions is always a prime number . In fact all the primes apart from 2 appear as a numerator in this infinite series Euler created this

  • Tuesday Teacher Tips: Thinking “Beyond One Right Answer”

    Updated: 2011-02-08 22:26:34
    Welcome to the Tuesday Teacher Tips series! Each week we’ll highlight teaching and learning resources, ideas to use in the classroom, as well as things to ponder as you go about your teaching day. For me, one of the most difficult aspects in teaching math is how to reach all students. There are the perennial dilemmas: [...]

  • What’s your favorite math book?

    Updated: 2011-02-08 18:17:20
    Home About Math Books Table of Contents Write for us Applied Math Essential Math History Math Education Math News Math Websites Software Suggested Reading Tutorial Unsolved Problems What’s your favorite math book Posted by Antonio Cangiano in Suggested Reading on February 8th , 2011 no responses Let’s do a small experiment . I’m not sure what the outcome will be , but definitely think it’s worth a shot no matter what . Using this link you can fill out a form and let us know about one great math book you’ve read and loved . It can be a textbook , a popular science book , or even a mathematical novel . It doesn’t . matter What we’ll do is collect the titles you share with us and turn them into a list , then we’ll show those books in a blog entry in the near future This should be a fun way to

  • Dimension 2

    Updated: 2011-02-05 20:47:52

  • Pi

    Updated: 2011-02-05 20:21:34

  • Happenings – 2011 Feb 5

    Updated: 2011-02-05 19:39:29
    WordPress has been running extremely slowly for the past half day, so I have no idea when I will actually be able to put out this post. But I will write it up this morning – Saturday – as per my usual schedule, and I will put it out when WordPress permits. Let me lead [...]

  • Wild About Math bloggers 1/28/11

    Updated: 2011-02-04 05:19:13
    Wild About Math Making Math fun and accessible Home About Articles Math contest problem links Videos Wild About Math bloggers 1 28 11 February 3rd , 2011 by Sol The current edition is at Equalis Here’s the end-of-January edition of Wild About Math Bloggers . Enjoy Math Teachers at Play Carnival 34 is up at . Math4allages One post in the Carnival that particularly got my attention was by John Cook telling us about an amazing lightning computing calendar produced by Ron D and available at the Dead Reckonings blog . It’s free as a PDF download or you can buy a printed copy at . Lulu Jon McLoone has a really fun article on using Mathematica for cracking ciphers using frequency analysis . techniques NPR has an interview with Keith Devlin the Math Guy , about a fun new book for kids on factoring

  • TCEA 2011 is Next Week! Will We See You There?

    Updated: 2011-02-03 18:27:49
    Are you attending the TCEA 2011 Education Conference next week in Austin, TX? If so, make sure you visit DreamBox Learning in booth 1350! We’d love to meet you, and you could win some great giveaways for your classroom. Join us in our booth for: Hourly demos Learn how DreamBox Learning provides adaptive instruction with every mouse [...]

  • New Math Activity Calendar: February is I Love Math Month

    Updated: 2011-02-03 03:34:41
    The shortest month of the year is here, but our February Math Activity Calendar has plenty of activities to keep your children busy. Celebrate the month with fun facts and activities during February’s I Love Math Month! On Groundhog Day, determine how many extra days of winter will there be if the groundhog sees his shadow, [...]

  • Tuesday Teacher Tips: Math Concept Books with Ellen Stoll Walsh

    Updated: 2011-02-01 16:56:32
    Welcome to the Tuesday Teacher Tips series! Each week we’ll highlight teaching and learning resources, ideas to use in the classroom, as well as things to ponder as you go about your teaching day. Looking for an author study with a math theme? Try some of Ellen Stoll Walsh’s books. Balancing Act Beach Lane Books, 2010 This book is [...]

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