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  All Sites - 1731 items found, showing 1301 to 1350

  1. The Problem Site - Douglas Twitchell
    Math puzzles, brainteasers, strategy games, web quizzes, and informational pages. Flash-powered math games include Adders, Zap (slide tiles to move digits and add up to a specified sum), Side By Side (number re-arrangement), One To Ten (given four numbers, ...more>>

  2. Problem Solving Island - Samuel A. Rebelsky
    Challenging open-ended word problems on the topics of games, such as Blockade, Finger Multiplication, and The Word Pyramid; puzzles such as Error Correction, Error Detection, The Fake Coin, Friday the 13th, and Leap Birthdays; and problems based on figures, ...more>>

  3. Prof. McFarland's Help Center for Mathematics Students - Thomas McFarland, Department of Mathematical and Computer Sciences, University of Wisconsin System
    McFarland's handouts for courses such as Finite Mathematics, Basic Algebra, Calculus, and The Logic of Chess. Interactive (JavaScript) self-tests or explorations cover integer and fractional exponents; factoring; reducing, adding, multiplying, and dividing ...more>>

  4. Project Atmosphere Australia On-line - Sel Kerans; Australian Bureau of Meteorology
    On-line meteorological activities open to international schools. The site provides access to Australian weather observations, forecasts, and archived weather statistics, with information designed to educate the general public about weather and related ...more>>

  5. Project Interactivate - Shodor Education Foundation, Inc.
    Interactive middle school lessons on number and operations, geometry and measurement, functions and algebra, and probability and statistics. They feature: online activities (illustrative Java applets including: Venn diagrams; clock arithmetic; Pythagorean ...more>>

  6. Project Poison Applet - Computer Science Dept., Trinity College Dublin
    A site created by first-year computer science students as a Java programming project. Each of 12 topics (Algebra; Geometry; Trigonometry; Calculus; Matrices; Sequences & Series; Complex Numbers; Vectors; Probability; Groups; Further Calculus; Further ...more>>

  7. The Projects of R. W. Gray - Robert W. Gray
    Geometric coffee tables, an introduction to polyhedra and the jitterbug (a dynamic polyhedron) that draws on the golden ratio, a collection of notes with respect to R. Buckminster Fuller's work, photos of a dome frame Gray built with students at Oswego ...more>>

  8. Project VISIT
    An online professional development collaboratory for high school teachers of science, technology, and social science, supported by the National Science Foundation. VISIT seeks teacher leaders to participate in leading this program during February - May, ...more>>

  9. Prongo.com
    Free online games, such as Batter's Up Baseball and Lemonade Larry, for practicing arithmetic, investing in the stock market with real time stock prices, using logic to guess a number and decipher secret codes, and more. Themes of other games include ...more>>

  10. Proofs Without Words - Cut the Knot!, Alexander Bogomolny
    Martin Gardner wrote, "There is no more effective aid in understanding certain algebraic identities than a good diagram. One should, of course, know how to manipulate algebraic symbols to obtain proofs, but in many cases a dull proof can be supplemented ...more>>

  11. ProveIt! Two-Column Proofs Practice Tool - Michael Ferraro
    Michael Ferraro of Balboa High School in San Francisco, CA, created this tool for students to practice their two-column proof skills. Choose a topic to begin, and choose statements and reasons from the list given. As you go, there are options to remove ...more>>

  12. PuzzleBeast - James W. Stephens
    A collection of computer-generated puzzles, some illustrated with Java applets, some with solutions included: The Fried Okra Perplexity, A Dozen Irritating Sliding Block Puzzles, The Bulbous Blob Puzzle, Meandering Monk Maze, The Kung Fu Packing Crate ...more>>

  13. Puzzlemaker - Discovery Education
    A puzzle generation tool for teachers, students and parents. Create and print customized puzzles, including math squares and number blocks, online, or buy a CD with editing tools and other extras. ...more>>

  14. Puzzle Up - Binary Arts Corporation
    A collection of others' Java puzzles, baffler and logic questions, "for serious puzzlers," best of the week, and mazes and mysteries, each organized into the three different skill levels of young, brisk, and expert. Also, information on the company's ...more>>

  15. Puzzle Workshop - maths online - University of Vienna, Austria
    Make your own interactive "jigsaw," or multiple choice puzzles, to save and run on your own computer or to publish on the web. The Applet puzzle creation page requires Java; the Test puzzle creation page allows greater use of mathematical symbols. ...more>>

  16. Puzzlies.net - Michał Barciś
    Play sudoku and griddler logic puzzles online. Log in to save game play and compete in the rankings. ...more>>

  17. Pythagoras' Haven - Jim Morey
    Step through a geometrical Java applet proof of the Pythagoraean theorem - the square of the hypotenuse of a right triangle is equal to the sum of the squares of the other two sides. ...more>>

  18. Pythagoras' Theorem: Elaboration on the Similarity Argument - Interactive Mathematics Miscellany and Puzzles, Alexander Bogomolny
    Euclid included two proofs of the Pythagorean theorem in his Elements. A better known Proposition I.47 (Bride's chair) and VI.31 which is consistently overlooked in the introductory geometry courses. The latter, however, renders the theorem virtually ...more>>

  19. Pythagorean Theorem Animated Voice Demo - Chris Beall
    Animted deerivation of the Pythagorean Theorem. ...more>>

  20. Pythagorean Theorem (Manipula Math) - International Education Software (IES)
    Java applets for experimenting with shifting, rotating, and moving pieces of quadrilaterals to prove the Pythagorean Theorem. ...more>>

  21. Pythagorean Theorem - Over 20 Proofs - Interactive Mathematics Miscellany and Puzzles, Alexander Bogomolny
    A general exposition of the Pythagorean theorem, with proofs from Euclid to Garfield - and more. Also links to other sites on the Web with proofs. ...more>>

  22. Pythagorean Triples - H.B. Meyer
    A Javascript calculator for pythagorean triples. In English and German. ...more>>

  23. Pythagoreisches Tripelprogramm - Heinz Becker
    A Java applet that reads a and gives integer solutions of a^2+b^2 = c^2. In German and English. ...more>>

  24. Pythagoräische Tripel (Pythagorean Triplets) - H. B. Meyer
    A calculator for Pythagorean triplets, making visible the one-to one correspondence between triplets and certain pairs of relatively prime numbers, and an interesting correspondence with certain sequences of letters A, B, or C. (Javascript is required.) ...more>>

  25. Pythia Equation Solver - Pablo Perna
    The site contains equations for which the user can solve automatically any unknown given the known parameters. Geometry equations include areas of triangles and circles, and surface area and volume for various 3D shapes. Equations also include electronics ...more>>

  26. Qdos Math - The Education Channel International, Ltd.
    An interactive online program delivering elementary mathematics content. Written by teachers, the program includes assessment tests, interactive tuition/demonstration pages and follow-up exercises and activities. Qdos is available via the internet at ...more>>

  27. Q-Puzzle - XIAO Gang
    A mathematical jigsaw puzzle: your goal is to recover a disordered photo by finding the inverse affine transformation. A French version is also available. ...more>>

  28. Quadramania - CleverMedia
    Use tiles of different shapes to form rectangles and earn points -- ten times the square of the total number of tiles in the rectangle. Requires the Flash plug-in. ...more>>

  29. Quadratic Map - Ron Lee
    The Quadratic Map is the chaotic dynamical system composed of the following equation: x_n+1 = 4 lambda x_n(1 - x_n) with parameter lambda. The Java applet is a quadratic distribution plotter. ...more>>

  30. QuantumBrainBenders - Joel Klebanoff
    A series of puzzles: find a series of numbers in a grid that add to the given sum. A new puzzle for each of three skill levels is posted daily. The site also includes an archive of previous puzzles. ...more>>

  31. QUdata.com - Icestone Trustee Limited
    Online tools and reference library resources for data mining and knowledge discovery. Collection of free online statistical and scientific calculators, 2D and 3D function plotters. ...more>>

  32. Queryous - Information Manipulation, Inc.
    An interactive quiz tool. Take a quiz on any course currently available or create your own course and earn half the proceeds. Businesses may use this for training or create free courses for brand recognition. ...more>>

  33. QueryTree - D4 Software Ltd
    Drag and drop this free tool to explore, analyze, and visualize data — without special code, formulas, or even software: QueryTree queries tabular information within your web browser. ...more>>

  34. The Quest for the Holy Value - Kjetil Valstadsve
    Finding the correct value of pi. The likelihood of any random two integers having 1 as their greatest common divisor (no factors in common), has been proved to be 6 divided by pi squared - the numbers are prime in relation to each other. According to ...more>>

  35. Quia! - The Learning Group
    Create your own Java-enabled quizzes, home pages, and learning games to play over the Internet: enter your material into a form, select a few options, and press a button. Games have been created and are available for browsing in mathematics, as well as: ...more>>

  36. Quite BASIC - Nikko Strom
    A JavaScript environment for coding in the classic BASIC programming language. Math projects include the Fibonacci Sequence, Fibonacci Squares, the Sieve of Eratosthenes, and Mandelbrot; puzzles include the Towers of Hanoi and variations of the Eight ...more>>

  37. Quiximity - CleverMedia
    Race against the clock to find three-of-a-kind that match in color or shape, earning point bonuses for objects adjacent to one another. Requires the Flash plug-in. ...more>>

  38. Quizma --> Matemática Cálculo Robótica - Harold Suárez Guzmán
    In Spanish: Clases y Orientación en Matemáticas Cálculo y Robótica. Fórmulas - Demostraciones - Ejercicios - Ejemplos - Cálculo Interactivo. Algebra, Logaritmos, Trigonometría, Geometría, Estadística, Ecuaciones, Problemas de Planteo, Funciones, Geometría ...more>>

  39. Quiz Me - D. Kell and Mercer County Community College
    Interactive quizzes constructed using software provided by Addison Wesley Longman Publishers. Auto-scoring, multiple choice self-tests on whole numbers (place value, operations, applications, rounding, roots and order of operations); fractions (equivalencies, ...more>>

  40. Quiz-Tree Math Games - Sierra Vista Software
    A collection of online math quizzes in addition, subtraction, multiplication, and division. ...more>>

  41. Quizzes.cc
    Use the menus and text boxes to create your own quizzes on addition, subtraction, multiplication, and division -- or browse from among a selection. Click the appropriate button to reveal answers, grade responses, or generate new problems. ...more>>

  42. Radius and Diameter - NASA Lewis Learning Technologies Project
    Mr. Jordan wants to put up a fence all the way across the middle of his round vegetable garden. If the radius of the garden is 3 feet, how many feet of fencing will Mr. Jordan need to buy? A detailed answer is provided. From NASA's 9th Grade Math Proficiency ...more>>

  43. Rainforest Maths - Jenny Eather
    Flash-based interactive mathematics activities with an Australian rainforest theme, for grades K through 6. Topics include: Number & Number Systems; Operations & Calculations; Strategies & Processes; Patterns & Algebra; Measurement; Space & Geometry; ...more>>

  44. random.org - Mads Haahr
    Generate random numbers on the Internet by using a web form (comparable to throwing dice), randomized sequences (lottery tickets), raw random bytes, virtual coin flips, or bitmaps. All numbers are tested statistically and the results available in real-time. ...more>>

  45. Random Walk Along a Line: A Simulation - David Sumner; University of South Carolina
    A Javascript simulation of a particle moving along a straight line with absorbing states at either end. Modifiable variables: length of the line, starting position of the particle, number of trials. The theoretical expected length of a walk with these ...more>>

  46. RapidCalculator - ProAlgorithms.com
    This mobile computing platform for web and handheld devices performs matrix operations like multiplication/inverses; plots graphs of functions and operations on polynomials; manipulates complex numbers; and evaluates other math, science, and engineering ...more>>

  47. Ratio and Proportion - NASA Lewis Learning Technologies Project
    If the ratio of boys to girls is 5 to 8 and there are 40 girls, which proportion should you use to find out the number of boys? A detailed answer is provided. From NASA's 9th Grade Math Proficiency Test. ...more>>

  48. Rational Number Tutorial - Joseph L. Zachary
    A tutorial that explores the nature of rational numbers, the significance of the minimum and maximum integers in a rational number system, and the meaning of overflow. Includes a Java applet that opens in a separate window, for use alongside the tutorial. ...more>>

  49. Raw - DensityDesign Lab
    The "missing link between spreadsheets and vector graphics," this open web app's interface lets you create custom vector-based visualizations on top of the Data-Driven Documents JavaScript (D3.js) library. Starting with delimiter-separated values in plain-text ...more>>

  50. Reasoning Mind - Reasoning Mind Inc.
    Reasoning Mind is a non-profit organization. It's also a core curriculum based on programs proven successful in Russia, China, and Singapore. A Reasoning Mind classroom combines a teacher and the computer, aiming to get kids so interested in math they'll ...more>>


 
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