- Count the Apples - simplyfluid.com
A free online learning tool that uses images of apples to help pre-schoolers
and kindergarteners learn to count up to 10 by both numbers and words. There are 4 levels of increasing difficulty for sequence and image patterns.
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- CourseServer - Jud Cornish; Fairbanks Country Day School, San Diego, CA
A Web-hosted math problem generator that allows you to select from thousands of different problem types and automatically generate problem-and-answer worksheets in your browser that can be printed out. Choose from a list of courses from Grade 1 (beginning
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- CPMP-Tools - Core-Plus Mathematics Project (CPMP)
CPMP-Tools is a suite of both general purpose and custom software tools designed to support student investigation and problem solving in the 2nd edition Core-Plus Mathematics texts. The Core-Plus Mathematics Program was one of five designated as "exemplary"
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- Create 2D and 3D gnuplot Graphs
Input a function, vary parameters, plot 2D, 3D Surface, or 3D Contour, vary range displayed, and plot multiple functions at once. With help on various features, and links to graphing animated plots and varying the parameters. Part of the Shodor Educational
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- Create a Graph - National Center for Education Statistics (NCES)
Create your own graphs online: bar graphs, line graphs, area graphs, pie charts, or XY graphs (line, bubble, or scatter plots from Cartesian coordinates). Enter your own data, choose your own labels, preview your work, then print or save your graphs.
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- Creative Java Puzzles - J. L. Read, Enchanted Mind
Games "good for exercising both sides of the brain." Knight's Tour: pass all the squares of the board with the knight, making only legal moves. Peg Solitaire: Remove all the pegs in the least amount of time, finishing with only one peg in the target hole.
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- CROC'Sciences: le net.magazine de la pédagogie des sciences - P. Lambert
Un mensuel faisant le tour des sites scientifiques d'intérêt
pédagogique, soit pour la construction d'un cours, soit pour les
élèves eux-mêmes. Chaque numéro comporte 6
catégories: Mathématiques,
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- Crossnumber puzzle (figure logic) - Alfredo Baratta
Cross figure puzzles to print or play online. Also known as figure logic puzzles, cross figure puzzles resemble crosswords in structure, but with entries consisting of numbers rather than words, and clues based on math questions, e.g., "1 Across: The
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- Cross Number Puzzles - Rainer Typke
Cross number puzzles to solve online; log in to create your own. Also known as crossfigure, figure logic, or numberlock puzzles, cross number puzzles require numbers instead of words to complete a crossword-like grid.
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- Cryptarithmetic Puzzle Solver - Naoyuki Tamura
Enter a cryptarithm or select an example, such as SEND + MORE = MONEY. Also, puzzle generators based on themes such as color names, fruits, vegetables, and numeral words in English, French, German, Spanish, and Italian.
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- Cryptarithms - Interactive Mathematics Miscellany and Puzzles, Alexander Bogomolny
Cryptarithms are brain teasers obtained when digits in numerical calculations have been replaced by letters. Customarily, distinct letters stand for different digits. Another term, Alphametics, denotes cryptarithms in which letters form meaningful words,
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- Crystals: Crystallography & Systems - Suzanne Alejandre
A Math Forum Web Unit. Students studying polyhedra enjoy seeing the structures as they occur in the real world. Crystalline structures can be categorized into seven crystal systems: see photographs of beautiful crystals or make paper models of crystals
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- CTAP Middle School Math Project - CTAP Region IV
A database of online technology resources supporting California middle school math content standards for grades 6, 7, and algebra. Designed for use in classroom instruction or as homework helpers for students, the matrices resources align to state standards
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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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- Cube Roll - Cary and Michael Huang
Use the arrow keys to steer a cube along a path of squares towards a final square. Each successive level poses new restrictions based on which faces of the block can or cannot roll onto the square path, making a game out spatial thinking of polyhedral
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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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- Curriculum Pathways - SAS inSchool
Internet-based product that connects teachers to a broad range of curriculum resources and clarifies ways to use those resources in the classroom. Find lesson plans and links to Web sites in math, science, English, and social studies; access national
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- Curry's Paradox - Interactive Mathematics Miscellany and Puzzles, Alexander Bogomolny
A bewildering dissection paradox wherein recombination of 4 pieces cut of a rectangle produces a rectangle of a different size. Borders geometry and algebra. Accompanied by a Java illustration.
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- Cyberkidz - Chato BV, touchscreensoftware.nl
A free website with more than 50 games about math, literacy and geography. In English and Dutch.
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- Cyberkidz.net - Chato BV
Online educational games for primary schools, widely used in the Netherlands and recently translated into English.
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- Cybermath - Gustav Taxén, Ambjörn Naeve, Olle Sundblad, Pär Bäckström and Sören Lenman
An avatar-based collaborative virtual exploratory environment for math. Trial version for Windows is available free.
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- Cyberpapy - Boulanger
Posez votres questions des devoirs dans les forums; des "cyberpapys" répondent.
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- CyberStats - CyberGnostics, Inc.
A complete online introductory statistics course, including: a focus on data analysis and conceptual understanding rather than computation; over 600 interactive applets; real data in real-world settings; a built-in, simple, and free course management
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- Daeron's Java - Daeron Meyer
Numerous applets, created by a former technician at the Geometry Center, can be enjoyed here if you have a Java enabled browser. Math-related creations include a 3D viewer; Real time function graph; Rotating Red Triangle; Circle Text; and links to other
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- Daily Squares - Steven Pomeroy
Arrange the digits in the 4×4 grid so that each column, row, and diagonal adds up to 34. Visit every day for a new magic square puzzle; check the archive for past challenges.
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- Daniel J. Velleman - Daniel J. Velleman, Department of Mathematics and Computer Science, Amherst College
In addition to Velleman's selected papers, link to his books, software, and unpublished papers, including Proof Designer, a Java applet designed to help students learn to write proofs in elementary set theory by outlining the steps of proofs under the
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- Daniel Lemire's homepage - Daniel Lemire
Daniel Lemire is a researcher in wavelet theory, data thinning and subdivision schemes. Recently, he has been interested in applications of these mathematical tools to e-business and data mining. Site contains papers (downloadable, PDF format), software
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- d'Arbeloff Interactive Math Project - Massachusetts Institute of Technology
Java applets, with help documentation, for exploration: Amplitude and Phase, Beats, Complex Exponential, Complex Roots, Convolution (accumulation or flip and drag), Damped Vibration, Damping Ratio, Euler's Method, Forced Damped Vibration, Fourier Coefficients,
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- DareWare: Educational, Multimedia and Java Games
Educational games and multimedia products (free demo versions downloadable), Java games, "This Week in U.S. History", and a brief list of other shareware sites.
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- Data Games - KCP Technologies
As students play Data Games, they generate data that they must analyze to win the games. Supporting materials include a student worksheet; teacher guidelines that correlate the activity to the Common Core State Standards for Mathematics (CCSSM); and videos
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- Dave's Geometric Pix Gallery - David Joyce; Dept. of Mathematics & Computer Science, Clark University
Mandelbrot and Julia sets, with a generation form and an Explorer on which you can point and click to get more refined images;
Newton Basins and a form to generate them; a page describing tiling the hyperbolic plane; some wallpaper groups; a gallery
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- Davitily Math Problem Generator - Nguyen, Ly; and Pardue, David
Create worksheets and tests, including options for multiple choice, printable versions, and answer keys. Click to insert pre-worded questions in basic math, algebra, and geometry, the parameters of which vary randomly. Requires JavaScript. Also available
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- Deal or No Deal > Game - NBC
A Flash version of the television game show hosted by Howie Mandel. Begin by choosing one of 26 briefcases. Each contains cash -- as little as one cent to as much as one million dollars. Then either stay with your original briefcase choice or make a "deal"
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- Decimal Places on a Number Line - NASA Lewis Learning Technologies Project
Decimal places: On a number line, which of the following numbers would be the farthest to the right? 0.001, 0.0015, 0.00099, 0.0005. A detailed answer is provided. From NASA's 9th Grade Math Proficiency Test.
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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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- Demography: the Java Version - Daniel Udovic, Joshua Coxwell
Java Demography 2.0.2 simulates growth in age structured populations. The program's click and drag features allow users to directly manipulate the fertility and mortality graphs and the population's current age distribution, represented as a bar chart
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- Demos with Positive Impact - David R. Hill and Lila F. Roberts
Demos with Positive Impact organizes effective math teaching tools. Submit your own demo, or browse the existing collection of physical demos, calculator demos, databased demos, browser-based demos, and software demos, each with statements of objectives,
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- Demos with Positive Impact - David R. Hill and Lila F. Roberts
A collection of classroom demonstrations that use some form of instructional technology. The authors invite others to submit demos and provide them with feedback on the demos already collected. Demos are organized under the levels of Pre Calculus, Calculus
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- Department of Mathematical Sciences - U.S. Military Academy, West Point
Publications include Cryptologia, CASE (Computer Algebra Systems in Education), Mathematica Militaris, and PRIMUS (Problems, Resource, and Issues in Undergraduate Mathematics Studies). MathTECH is a research project that provides Java applets and TI-89
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- Derivative Calculator - David Scherfgen
Compute derivatives of functions online, for free. Supporting symbolic computation of the 1st, 2nd, and subsequent derivatives of multivariable functions, the Derivative Calculator dynamically typesets expressions while you type them. derivative-calculator.net
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- The Derivative Project: Using Appropriate Technology to Teach the Concept of Derivative Via a Graphical Approach - Lisa Denise Murphy
Murphy has developed an instructional unit that uses a motion sensor and related software to introduce the concept of a derivative, and tested it in a first-semester calculus class, with very good results. She is now engaged in expanding this project
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- Descartes 3 - Ministry of Education, Culture, and Sport, Spain
Create interactive math lessons in web page format with this applet, or download any of more than 60 already created applets (ranging from "representing numbers on a straight line" to "tables and algebraic terms," from "geometry and a game of billiards"
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- Design Science - Design Science, Inc.
Math publishing and presentation tools for the web: MathType, the professional version of Equation Editor, for Windows or Mac; WebEQ, for building interactive math web pages; MathFlow, math publishing for the enterprise; and MathPlayer, to display MathML
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- Design Your Future - Math, Science, and Technology for Girls - Autodesk, Inc.
The Design Your Future mission is to provide practical, inspiring, hands-
on opportunities for young women to become aware of, explore, and pursue
math, science, and technology-based careers. It provides a number of opportunities, including: a tool
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- Desmos - Desmos Inc
This free online graphing calculator zooms in and out of plots, offers slider bars to explore parameters, switches between Cartesian and polar coordinates, and more. Save sketches, mark points of interest, turn on "projector mode" for thicker, darker
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- Des Trucs et des Maths - Philippe Picart
Sur le nombre pi; le nombre d'or; le Rubik's cube; des ressources à télécharger; et "des trucs de maths divers," comme un JavaScript qui répond à la question "Quel jour de la semaine es-tu né?" Avec un coins des
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- DevApprentice: Software Developer Apprentice - Kent Griffin
An online resource for learning elementary computer programming. Write and execute real programs, including graphics, in your web browser. Includes a programming problem of the week, examples, instructions, a glossary, and the online programming environment.
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- developer.com's collection of math Java applets - EarthWeb, Inc.
A browsable, searchable collection of links, authors, notes, and details about Java applets contributed to developer.com. Software is organized into the categories of basics and children's, fractals, games and puzzles, general, geometry, plotting, graphing,
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- Developing Geometry Concepts Using Computer Programming Environments (i-Math Investigations) - Illuminations; National Council of Teachers of Mathematics (NCTM)
An online, interactive, multimedia math investigation. Computer programming environments can be used to help children understand geometric concepts. The interactive tool in this i-Math investigation illustrates how LOGO can be used to foster creative
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- The Diamond Theorem - Steven H. Cullinane
Finite projective geometry explains the surprising symmetry properties of some simple graphic designs -- found, for instance, in quilts. Links are provided for applications to sporadic simple groups (via the "Miracle Octad Generator" of R. T. Curtis),
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The Math Forum is a research and educational enterprise of the Drexel University School of Education.