- Alphabet Geometry - Jamie Tubbs, MisterTeacher.com
Learn about geometry by looking at letters. Included are interactive Flash movies on transformations, angles, and similar letters. Movies on parallel and perpendicular lines are planned.
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- The Altitudes and the Euler Line - Interactive Mathematics Miscellany and Puzzles, Alexander Bogomolny
A proof of the existence of the orthocenter of a triangle embodying several concepts such as Morley's complex interpolation theory, Napoleon's theorem, and Morley's miracle; with examples of the theorems and a geometric explanation of the Euler Line and
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- The Altitudes - Interactive Mathematics Miscellany and Puzzles, Alexander Bogomolny
A collection of proofs of the concurrency of altitudes in triangles, featuring a Java applet with which one can see the various points, lines, triangles, and circles associated with any given triangle.
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- The Altitude Theorem for Equilateral Triangles - Web Feats Workshop II
Use the applet to intrigue students with a surprising property of equilateral triangles, stimulate their curiosity to wonder why the property is true, then lead them to understand how the property can be proven in an unexpected way. This workshop was
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- Amazing Applications of Probability and Statistics - Kelly Rogers; Intuitor.com
Intuitor.com's Prob. and Stat. page provides clear and concise information
on a variety of topics covered in AP Statistics, including: Probability,
binomial coefficients, data analysis, random numbers, skewness, hypothesis
testing, and power. This
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- AMOF: The Amazing Mathematical Object Factory - Frank Ruskey
Combinatorial objects are everywhere. How many ways are there to make change for $1 using unlimited numbers of coins of all denominations? Each way is a combinatorial object. AMOF is part encyclopedia and part calculator, a teaching tool that generates
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- Analog Gadgets - Interactive Mathematics Miscellany and Puzzles, Alexander Bogomolny
Java simulations of analog gadgets. Includes an analog device simulation for drawing ellipses, a Peaucellier Linkage simulation, an angle trisection demonstration, a demonstration/essay on cycloids, and applets on geoboards (with a proof of Pick's Theorem)
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- The Analytical Engine - John Walker
The mathematician Charles Babbage designed an Analytical Engine, a mechanical precursor to the computer, in the late 1800s. Read historical documents related to the Engine, including Blaise Pascal's account of his mechanical adding machine (in French),
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- Analyzing Numeric and Geometric Patterns of Paper Pool (i-Math Investigations) - Illuminations; National Council of Teachers of Mathematics (NCTM)
An online, interactive, multimedia math investigation. The interactive paper pool game in this i-Math investigation provides an opportunity for students to further develop their understanding of ratio, proportion and least common multiple. Students develop
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- Andrew's Fractal Page
Click on areas of the Mandelbrot set to see images of the associated Julia sets. Information about creating the fractals is included.
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- The Angle Bisectors - Interactive Mathematics Miscellany and Puzzles, Alexander Bogomolny
A discussion of why the angle-bisectors of a triangle meet at the incenter of the triangle, in several different ways, involving: cevians, the transitivity property of equality, axes of a 2-line, altitudes and orthic triangles, and complex numbers.
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- An angle "trisection" - Rouben Rostamian, University of Maryland, Baltimore County
A Java applet that trisects an arbitrary angle with great accuracy, based on a highly accurate approximation algorithm first proposed by Mark Stark in the geometry-puzzles discussion group and subsequently discussed there by John Conway and Eric Bainville.
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- The Animated Telegraph Equation - Joel Feldman; Department of Mathematics, Univ. of British Columbia, Vancouver, BC, Canada
An applet illustrating the behaviour of solutions of the telegraph equation.
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- Anisohedral Tilings Page - John Berglund
Tilings and tessellatings with 2-anisohedral and other isohedral tilings. With explanations and a bibliography. Berglund's JavaSketchpad applets include circles in a lattice shape; affine polygons, which extends Napoleon's theorem from a triangle to a
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- Annie's Sketchpad Activities - Annie Fetter
Handouts for activities that incorporate JavaSketchpad, including: making a presentation sketch; investigating the properties of quadrilaterals; the Euler segment; morphing a simple figure to a circle; Napoleon's theorem; drawing a box and its net; and
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- Apex Learning - Apex Learning
Standards-based online curriculum for secondary education in the core academic subjects and Advanced Placement, available in multiple formats or packages to address differing purposes and populations: enrichment, credit recovery and remediation, virtual
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- aplicaciones java - Fernando Navarro-Rodriguez
Diagramas: de un array; en cartesianas; diagramas independientes en polares y en cartesianas; diagramas interconectados en polares y en cartesianas; ejemplo de comunicación entre applets dentro de una misma página; modos TM y TE en guía
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- APlusStudent Online Learning
Interactive math lessons with graphics, animation, and audio, based on Micromedia Flash technology. Teacher-designed, standards-based lessons. Parents can monitor the progress of their children. There is also homework help and an online gallery where
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- Apples4theteacher.com - Judy Miller
Free interactive early math learning games in JavaScript. Activities reinforce measurement, telling time, shapes, counting, tangrams, and counting money; and some have a specific holiday theme. Counting in Spanish, Polish, and Gaelic also offered.
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- Applet Library (Project Links) - Rensselaer Polytechnic Institute
A library of applets in calculus; linear systems; differential equations; probability and statistics; and advanced math methods. Applets: Balance Applet; Beats; Bicycle Pedal; Bicycle Frame Angle, Frame Force, and Frame Length Analysis; Budget Optimization;
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- Applets for Linear Algebra - Dr. Rukmini Sriranganathan, Virginia Tech
Three applets: Draw and test a Vector (draw a vector; change the x or y coordinate of the head or tail and see the effects); Vector Addition and Subtraction (draw two vectors and add and subtract them); and Dot Product and Cross Product.
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- Applets for "Random Signals and Noise" - G. Tong Zhou, Georgia Institute of Technology
Eleven Java applets to experiment with: the relative frequency approach to probability; random variables from known distributions; random variables from user-defined distributions; the Central Limit theorem; consistency of the sample mean estimator; select
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- Approximating the area of a unit circle with regular polygons - Lisa Markus; Furman University, Greenville, SC
A Java applet for the area of a circle of radius 1. Enter the number of sides, from 3 to 1000, draw the polygon, and see the corresponding area.
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- AP Statistics - BB&N Upper School
A course from the Buckingham Browne & Nichols School. Advanced Placement Statistics acquaints students with the major concepts and tools for collecting, analyzing, and drawing conclusions from data, featuring work on projects involving the hands-on
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- Aquí Matemàtiques (Catalán) - Carlos Romero
Web and interactive materials in Catalán designed to facilitate and improve teacher training in mathematics. Goals: to provide curricular incentives for integrating technology into primary and secondary level teaching; facilitate access to curricula;
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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' Book of Lemmas - Alexander Bogomolny
Archemedes' Book of Lemmas included fifteen propositions. They are listed here, each with its own Java illustration and complete proof.
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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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- Archimy.com: 3D Graphs Online - Denis Kozyr
A service for drawing the graphs of all kinds of functions. Users can define a graph by specifying the formula for the coordinates x, y, and z.
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- Area and Diameter - NASA Lewis Learning Technologies Project
Mrs. Bosley wants a big round piece of plastic to throw over her little boy's round sandbox to keep the sand clean. The sandbox has a diameter of 3 meters. Approximately how big will the round piece of plastic need to be? A detailed answer is provided.
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- ArithmaClick - J. D. Brown
Practice addition and multiplication while keeping score.
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- Arithmetic and Algebra - Interactive Mathematics Miscellany and Puzzles, Alexander Bogomolny
More than 110 games or puzzles having to do with arithmetic or algebra, with extensive discussions and solutions. Most require a browser capable of displaying JavaScript or Java.
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- Arithmetic CD - John Banfill
The Arithmetic CD contains over 1700 basic arithmetic lessons for K-8 students. Each lesson has an explanation, some interactive practice, and challenge games. The lessons on the CD consist of interactive html files and require a web browser to operate.
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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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- Aritm - Mikael Bonnier
A Java applet for simple mental calculation, drilling on basic arithmetic (addition, subtraction, multiplication, or division, with 1- or 2-digit terms), in digits, words, or Roman numerals. It will tell you when your answer is wrong, and how many problems
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- ARMA Grapher - Aaron Bono
An applet designed to give those new to the field of Time Series a feel for the
"look" of some basic time series models, to help students and instructors generate random data for simple ARMA models and get a feel for what the data might look like. It
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- The Art of Calculating Real 2D Vectors - Hero van Jindelt
Freeware: Print the text for pupils. Numerical 2D-calculator. We don't need
words like imaginary, complex number, or Argand Diagram any more--save them
for a history lesson. Ordinary vector-calculation with a "new" (centuries-old) multiplication,
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- ASCII Shop - ridiculopathy.com
Graphically lay out and format ASCII art. Toggle through standard keyboard symbols, then "paint" them onto the monospace "canvas," and apply effects such as clearing, lightening, darkening, filling, stroking, blurring, and flaring. To capture a text-friendly
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- Ask Mr. Math!
Post math questions to a searchable bulletin board or by e-mail. Online tools address topics such as circle and triangle areas, exponents ("What is __ to the __ power?"), acceleration, grade point average (GPA), interests, and loans.
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- Asknumbers.com
Online conversions between different measures of length, weight, temperature, pressure, energy, frequency and more.
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- Assignment Calculator - The University of Minnesota
Enter the date you will begin an assignment and its due date, then select a subject area such as mathematics, and the Assignment Calculator will outline steps to take to complete the work on time.
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- Asymptopia Software - Charles Cossé
Free math games include TuxMathScrabble, which challenges players to construct compound equations in the manner of Scrabble; Multiplication Station, which provides practice in addition, subtraction, and multiplication; and MakeItTrue, a web application
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- Automated Deduction - William McCune
Research on applications of automated deduction to problems in abstract algebra and algebraic geometry, algorithms and strategies for searching for proofs and for counterexamples, high-performance implementation of automated deduction algorithms, and
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- Automated Geometry Java Applet Generation - Saltire Software
Prototype automatic generation of Java Applets from a constraint-based geometry description. Examples: geometry applets (angles on a chord, similar triangles, angles between parallel lines, two right kites, perpendicular bisectors of a right triangle,
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- Automaths: Online Maths Activities for Kids - Education by Design, UK
A Java applet with three different levels to practice for automatic response skills, suitable for children of all ages. Use the levels to customise: Junior challenges addition and subtraction skills; middle provides problems using addition, subtraction
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- Automatic Calculus Solutions: Step-by-Step Derivatives and Integrals
Derivatives and integrals, done automatically with each step explained. Long multiplication and division of polynomials.
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- Averaging Diving Scores - NASA Lewis Learning Technologies Project
Kim received the following scores in the state diving championships: 5.2, 5.6, 4.5, 5.0, and 5.2 What was her average (mean) score? A detailed answer is provided. From NASA's 9th Grade Math Proficiency Test.
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- The Awari Oracle - John Romein
Play the ancient African "count and capture" strategy board game, related to mancala, and also known as wari, awale, oware, or ayo. Dutch computer scientists from Amsterdam's Vrije Universiteit developed a program that computes the best move and eventual
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- Bagatrix Mathematical Software - Bagatrix Solutions, Ltd.
Commercial software that features step-by-step solutions to user-entered problems, with prompting. Titles include: Solved! Studio (comprises Basic Math, Pre-Algebra, and Algebra titles), Algebra Solved!, Pre-Algebra Solved!, Basic Math Solved!, Graphing
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- Bar Chart Applet - Robert Scott Mitchell
Enter values for the ten bars; control their orientation, and the scale of the chart at runtime.
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The Math Forum is a research and educational enterprise of the Goodwin College of Professional Studies.