- The 101questions Blog - Dan Meyer
A blog "to perplex my students, to put them in a position to wonder a question so intensely they'll commit to the hard work of getting an answer, whether that's through modeling, experimenting, reading, taking notes, or listening to an explanation." Look
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- 24 Theory
This "hobby website" offers JavaScript that calculates, enumerates, and displays all distinct solutions and solvable scenarios to the popular arithmetic card game, as well as interactive tables. 24theory.com also provides an online version of the 24 game
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- 2 Pi Productions - Jake Scott
Scott's instructional math rap videos include the original songs "Triangle Experts," "Special Right Triangles," "Graphing Trig Functions," "Quadratic Formula," and "The Best Pythagorean Rap Ever." Lyrics include "The cosine is sine with a phase shift
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- Aard 3D Puzzles - AardAsNails Software
Rubik's cube-like puzzles to solve online. Virtually twist and spin a pyramid, cube, diacube, or diamond, selecting solid or transparent views. Purchase the full version for up to ten levels of difficulty and preset problems.
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- About Rubik's Cube - Dan Knights
See the author's collection of Rubik's cubes, his solution and timing methods, thoughts on solving Rubik's Cube with your eyes closed, and suggestions for lubricating your cube and where to get them.
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- Activities & Information Supporting Pi Day Celebration - Carolyn M. Morehouse
Lesson plan, songs, trivia quiz, and refreshments sign-up sheet for a Pi Day celebration. Hosted by the Math Forum's Teacher Exchange.
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- The Addventures of Plusman - Michael Cherry
Math puns, wordplay and illustrated concepts, all in a comic book format. The first of the Plusman series introduces Adam Tegetter, Aidee DeGrangle, Hex A. Hedron, the evil Dr. Nein and the origin of Plusman and the Permutation; the second tells of the
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- Amazeing Art - Christopher Berg
Free printable mazes of buildings, ships, ancient monuments, and more. The site features historical essays describing some of the mazes of ancient times, together with maze terminology and tips on drawing mazes. There are also maze products for purchase,
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- American Pi - Lawrence Mark Lesser
Song lyrics by Lawrence Mark Lesser, approximately to the tune of Don McLean's "American Pie." Read a PDF of the Texas Mathematics Teacher article Slices of Pi: Rounding Up Ideas for Celebrating Pi Day, and see Lesser's "mathemusician" page for more lyrics
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- Ann McCallum Books - Ann McCallum
Lessons and puzzles to extend the math fairytales and history/mystery math project books by McCallum, author of The Secret Life of Math, Rabbits, Rabbits Everywhere: A Fibonacci Sequence, and Eat Your Math Homework: Recipes for Hungry Minds. McCallum's
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- Arcademic Skill Builders
Online educational JavaScript arcade games that teach automaticity and fluency with the four basic arithmetic operations. Single player math games include Meteor Multiplication, Demolition Division, Alien Addition, and Minus Mission. Drag Race (division),
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- Archimedes' Laboratory - Gianni A. Sarcone and Marie J. Waeber
Archimedes' Laboratory invents, creates, and develops hands-on thinking games which help teach mathematical applications. They also create and manufacture original educational manipulatives and puzzles to support promotional activities. The resources
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- Archimedes' Square (Stomachion) - Kadon Enterprises, Inc.
Square puzzle dissected into 14 tiles, described in Archimedes' palimpsest. Oldest documented puzzle in history, from ca. 250 B.C. Now known to have 536 distinct solutions.
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- Arithmetiles: Speed Math Skills
Online game to warm up your brain with fairly easy math challenges. Downloadable versions available for purchase.
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- Backpack Project - Germantown Academy
Spurred by an orthopedic surgeon's report recommending how much weight a person should carry, teams of fifth and twelfth graders examined student backpack weights in relation to body weights in all three divisions of their school, weighing over 800 students
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- BrainBashers - Kevin N. Stone
A collection of logic, language and math puzzles, in a choice of easy/medium/hard. Rate the puzzles; show their answers. Logic puzzles include Einstein's Puzzle. Play games of strategy, such as "Four in a Row" (also known as "Connect Four") or games based
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- Burnt Toast Publishing - Bran McMillin
Burnt Toast Publishing offers the math puzzles for free use.
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- Card Games - John McLeod
Rules and information, including probabilities, about card and tile games. Indices by alphabetical order, classified by mechanism and by objective (including a list of children's games), arranged by country and the types of cards. Also, commercial, solitaire,
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- Chips A Tally - Bayonne, NJ Board of Education - 5th Grade Teachers
A collaborative math project to determine whether the number of chocolate chips in Chips Ahoy cookies is the same everywhere. Classes may submit data, and results will be posted November 30, 2000. Site includes: lesson plans that use statistics to analyze
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- Cipher Challenge - University of Southampton
A cipher challenge for cryptographers under the age of 19. With solutions and comments about the breaking of sets of encoded messages, or ciphertexts, of increasing difficulties.
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- Constructor - Soda
Constructor animates and edits two-dimensional models made out of masses and springs. The springs can be controlled by a wave to make pulsing muscles, and you can construct models that bounce, roll, walk, etc. Try some of the ready-made models or build
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- Cool Cosmos - Education and Public Outreach Group, Infrared Processing and Analysis Center and the SIRTF Science Center
To communicate the world of infrared astronomy to the public, the Cool Cosmos web site offers: classroom activities; infrared light lessons; infrared astronomy tutorial and timeline; multiwavelength astronomy; Ask an Astronomer; Cosmic Kids; image galleries,
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- The Counting Game - Chris Malumphy
A game for children starting to count, showing a number of objects and asking you to click on the correct number button. A thermometer graphic tells you when you have correctly answered ten questions.
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- Creative Problem Solving - Rob Eastaway
Eastaway's "portfolio" of interests includes short descriptions of his school talks, newspaper articles, and books he has authored or co-authored, such as Maths for Mums and Dads, The Hidden Mathematics of Sport, How to Remember Almost Everything, Ever,
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- Cryptoclub - Vera Pless, Janet Beissinger
This website includes tools to encrypt and decrypt messages, an
animated treasure hunt, a classroom message board to send and
receive encrypted messages, and a place to explore mathematics
topics related to cryptography, such as prime numbers and
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- CTK Math Games for Kids - Interactive Math Miscellany and Puzzles, Alexander Bogomolny
This site presents a collection of Java-based interactive games and puzzles with mathematical contents and a few practice exercises disguised as games. Alexander Bogomolny, the site's author, writes, "There are a few games whose purpose is to allow for
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- Culturally Situated Design Tools: Teaching Math through Culture - Ron Eglash
Java for creating your own Mangbetu design, cornrow curves, graffiti, bead looms, SimShoBan, Yupik star navigator, Yupik parka patterns, Pre-Columbian pyramids, and rhythm wheels -- and learning the mathematics behind them. Organized into African, African
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- CYBERCHASE Online - Educational Broadcasting Corporation (PBS.org)
Companion site to CYBERCHASE, PBS's animated math adventure series, intended to foster math literacy and problem-solving skills for kids ages 8-11. Play interactive games or practice with tools such as the talking calculator, crack challenging puzzles,
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- The Dance of Chance Science Museum Exhibit - Center for Polymer Studies, Boston University
An online version of an exhibit focused on the emergence of patterns in Nature from physical and biological processes that appear to be chaotic. Exhibit kiosks, many of which are fractals, include Music of the Heart, Frozen Lightning, Erosion, Viscous
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- The Da Vinci Game - Martin Woods & Allison Carmichael
A board game with 800 challenges, including 200 numerical Logic Key questions. These can involve solving equations, using probability or applying lateral thinking, such as in the question: "cone alone flour minus call".
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- Deck-u-lator - Michael B. Moore
For your collectible trading card games, especially Magic: the Gathering. Deck-u-lator calculates the percentage that a card combination will occur in the first cards dealt off the top of the deck. The calculator uses multivariate hypergeometric distribution.
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- Digital Mathematical Performance - Gadanidis, George; Borba, Marcelo; Hughes, Janette; et al.
Watch video, live-acted dramatic storyboards, and animations of how people "perform" mathematics: Flatland, "Help Me, Fermi," Should Parallel Lines Never Meet," "The Pleasure of Making 10" (linear equations), "The Waiter" (the missing dollar problem),
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- Dr. Freemath - Bob Pawloski, Office of Internet Studies, University of Nebraska - Omaha
Archives of a project where elementary classes asked mathematics questions of the Omaha Free-Net, Project TEAM Internet (UNO), and the Technology Task Force of the Eastern Region Math and Science Coalition. Questions and answers range from "At the speed
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- Duke University Math Union - Jadrian Miles
The Duke University Math Union (DUMU) writes and hosts the annual Duke Math Meet. Download PDFs of problems and solutions from meets dating back to 1998.
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- Elementary School Student Center - Math Forum
Selected Internet links for Elementary School students: projects, activities, sites, and software to help make math fun.
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- Enigmatum, Centre des Énigmes
In French: A tous ceux qui aiment se creuser la tête, de nombreuses énigmes classées
par thèmes: logique, mathématiques, paradoxes etc.. Toutes les énigmes sont
accompagnées de leurs solutions. Des plus petits au plus grands venez
travailler votre
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- ExploreLearning.com - ExploreLearning
A library of virtual manipulatives called "Gizmos", primarily for grades 3-12, in math and science. Math topics include the major strands of instruction according to national standards, as well as developmental math, college algebra and college-level
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- Fermilab Education Office
Online explorations for students and teachers, plus information about field trips to Fermilab, student collaborations with Fermilab, student and teacher workshops, and links to other math and science education resources.
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- Fermi Off-the-Wall Math League - Karen Newell, Intermediate District 287, Plymouth, Minnesota
A Fermi question is posed with limited information given, and requires that students ask many more questions; for example, "How many water balloons would it take fill the school gymnasium?" ("What are the approximate dimensions of the gym?") Register
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- Fido Dido Puzzle - Digital Creative Communications
"Want to let me read your mind?" A Flash game in which Fido Dido asks you for clues as he figures out the random number you have chosen.
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- FoldPlay
Upload your photographs, print them out in FoldPlay's templates, then fold them into hex kaleidocycles, oct kaleidocycles, invertible cubes, and foldbooks. Also, instructions for folding nerdcatchers, sphericon pies, polygon puzzles, and other origami.
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- FractImage - David Rose
Preview jigsaw puzzle images that exhibit self-similarity, and purchase the puzzles online. Visit the fractal gallery; read about fractals and FractImage; and download fractal wallpaper for your desktop.
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- Fun Math for Kids from Big Learning - Dr. Karen A. Cole
Real-world applications for elementary school kids--especially designed for parents and kids to explore together. Also great for classroom warm-up activities.
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- Fun with Fractals and the Platonic Solids - Gayla Chandler
A site rich with photographs and drawings of Sierpinski triangles and Platonic solids, made by hand, to inspire children of all ages to construct their own mathematical structures. See photographs, many set in marine environments, of dodecahedra, hexahedra
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- The Fun Works - Education Development Center, Inc. (EDC)
A career exploration digital library for middle school youth (ages 11-14 yrs), designed to capture imaginations and direct youth toward careers in science, technology, engineering and mathematics (STEM). It places particular emphasis on engaging youth
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- The Galileoscope™ - International Year of Astronomy
High-quality, low-cost, easy-to-assemble telescope kits developed for the International Year of Astronomy (2009) in celebration of "... the celestial wonders that Galileo Galilei first glimpsed 400 years ago and that still delight stargazers today. These
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- gamepuzzles: for the joy of thinking - Kadon Enterprises, Inc.
Board games and the like: Combinatorial puzzles, tessellations, math manipulatives for all grades. Hands-on sets and some online exemplars of polyominoes, polyforms, color tilings. Source for classics like Archimedes' Square (Stomachion), Penrose tiles,
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- Games2Learn
Vendor of educational games, software, and activities for both parents and teachers. The site may be searched by category (Math, Spatial Learning, Science and Tech, etc.), grade level, game type, or personality profile (Planner, Peacekeeper, Producer,
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- Games for the Brain - Philipp Lenssen
Race the "IQ Score" clock while playing JavaScript brain teasers such as NumberCruncher (perform arithmetic calculations following order of operations) and Marsmoney (calculate the values of different currencies). The site also features several memory,
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- GAMES Group - The University of Alberta
GAMES is a research group for Game-playing, Analytical methods, Minimax search and Empirical Studies. It produces real-time programs for strategic game such as Amazons, Awari, Checkers, Chess, Domineering, Go, Hex, Lines of Action, Othello, Poker, RoShamBo,
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