 The World of Geometric Toy  Akira Nishihara
Play with animations and applets of Buckminster Fuller's Tensegrity and the Indian Ball (also known as the flexisphere), as well as wireframe renderings of the torus, the magic ring, the toroflux, the reversible polyhedron, and other objects. Nishihira
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 World of Teaching
Free Microsoft PowerPoint and whiteboard presentations for teachers. In particular, browse or contribute to the maths downloads. Formerly teacherpowerpoints.com.
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 The World of Trotter Math  Terry Trotter, Escuela Americana, San Salvador, El Salvador
A page of problems, problem sheets, and investigations, with links to image files of an inclass math newsletter, Trotter Math News. Of particular interest to the author are numbers: happy and dizzy numbers; palindromes; super squares; perfect, amicable,
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 World of Words, Numbers, and Notes  Mike Keith
Mostly original diversions in the areas of mathematics, word play, and music, including a Cadaeic Cadenza, a long pi mnemonic. Also, Ailihphilia (literature and word play) and Scitamatics (mathematical diversions): the recreational study of words, numbers
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 Worldometers.info
Counters that display the realtime data on world population (e.g., births this year, births today, deaths this year, deaths today, net population growth for today), government and economics (daily government expenditures toward health care, education,
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 World Population and Four Dice (Math Chat)  Frank Morgan; Christian Science Monitor
Answers to the old challenge (Estimate what fraction of the people who have ever lived on Earth are alive on Earth today.) plus a new challenge and an additional problem and answer (courtesy S. H. Logue: Ann learned that her old dotmatrix printer can
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 World Population Counter  David Levine
A site that gives the world's population at the time of page access and at a time in the past or the future. If you wish to include the counter in one of your pages, instructions are included. Also includes clientpull for continuous updating of the global
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 World's Fastest Man  Ivars Peterson (MathTrek)
The 1998 edition of The Guinness Book of World Records features an article about Donovan Bailey, billed as the fastest man alive. The article begins: "Canadian Donovan Bailey rocketed into the record books when he set a new world mark of 9.84 seconds
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 World Time Zone  iSBiSTER International, Inc.
The exact time in world countries from Afghanistan to Zimbabwe, including, individually, the United States and the Canadian provinces. A software Time Zone Map program that does not require an active connection to the Internet is also available from this
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 The World Wide Web and Pedagogy  Mathematics Education at The Math Forum
Examples of the hypertextual, hypermedia, communications capabilities of the Web in education: articles, courses, conferences, and model Web units.
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 World Wide Web Course Tools  WebCT
WebCT can be used to create entire online courses, or to publish materials that will supplement existing courses. It uses WWW browsers as the interface for the coursebuilding environment; other than the browser, there is no special software to install.
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 World Year of Physics 2005
The World Year of Physics 2005 is a United Nations endorsed, international celebration of physics. Events throughout the year highlighted the vitality of physics and its importance in the coming millennium, and commemorated the pioneering contributions
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 Wright Flyer Teachers' Lounge  National Aeronautics and Space Administration
Lesson plans include Wind Tunnel Data (lift and drag); Know all the Angles (does pitch affect lift?); Watch Your Altitude (the three axes of rotation and the movements of roll, pitch, and yaw); Getting the Wright Pitch; and Up, Up and Away (compare the
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 Write Math with the Math Forum  Math Forum
A standardsaligned, gradespecific program to improve math problem solving. Engaging problems adapted from the Problems of the Week program have been correlated to state standards, math topics, and widelyused textbooks. A trial membership gives you
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 Writing for a Math Class  B. Sidney Smith, Wendy Hageman Smith; Math Academy Online/Platonic Realms
A "minitext" concerning written communication in mathematics classes, for both students and teachers. Teachers' section discusses possible formats and assessment, and gives sample lessons; students' section gives practical tips on approaching a written
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 Writing in Mathematics  Dr. Annalisa Crannell; Franklin & Marshall College
Dr. Crannell's Guide to Writing in Mathematics, the checklist she uses, and writing assignments from her PreCalculus and Calculus I, II, and III classes. Contents include: Why Should You Have To Write Papers In A Math Class?; How is Mathematical Writing
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 Writing Math (Learning and Mathematics)  Joan Countryman; Math Forum
In her 1993 book Writing to Learn Mathematics, Joan Countryman, the Head of Lincoln School in Providence, Rhode Island, explores the relation between math and writing and provides a comprehensive description of the approach she takes to teaching math
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 Writings for a General Audience  Marcus Jaiclin
PDF articles on popular and recreational mathematics by Jaiclin, an Assistant Professor at Westfield State University: Notes on Mathematics of Voting Methods; Fractals, Pascal's Triangle, and the padic Numbers; Airplane Passenger Seating Problem; No
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 Writings from the MegaMath Project (MegaMath)  Casey, Fellows, Koblitz; Los Alamos National Laboratory
Documents containing classroom materials and discussions of mathematics pedagogy. The Los Alamos workbook; Lessons for math teachers; An hour in the classroom; Literacy lessons and mathematics learning; Computer science in elementary school; Combinatorially
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 Writing to Develop Understanding: The Math Forum @ Drexel's PoWs  Suzanne Alejandre
What can we ask students about their problem solving that will help them the most? This article, originally published in the December, 2006, issue of the CMC ComMuniCator, journal of the California Mathematics Council, addresses that question by examining
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 wrotniak.net  J. Andrzej Wrotniak
Includes shareware and freeware programs for Windows written by Wrotniak: scientific and regular calculators, a spherical geometry calculator, a logic and strategy game, a statistics graphing program, and a simple program to compute the area of a polygon.
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 www4teachers
A center for practical ideas about technology in education. Articles published online, updated monthly: teacher interviews on firsthand classroom technology; interviews with educational technology leaders; interviews with kids; howto columns on classroom
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 www.caseymongoven.com  Casey Mongoven
In his music, Casey Mongoven works with Fibonacci numbers, related sequences, and the golden ratio. The site includes scores, writings, WAVs, and MP3s among other files available for download. In English and German.
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 WWWMath Discussion Group page  Phillip Kent
An email discussion group dedicated to the subject of Mathematica and its interconnection with the WWW, HTML, VRML, Java, and other topics. This site includes a policy statement, how to subscribe, a mail archive, answers to frequently asked questions,
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 www.MAZES.com  John Knoderer, The MazeMan
Mazes in a variety of shapes and topics, with other mathematical puzzles as well. Mazes: Message, Shape, Pizza, Movie Madness, Hidden Picture Octomazes, Satellite (Circular) Mazes, Hexagonal, Mathematics Mazes. Puzzles: Magic and perfect squares, Number
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 www.MonteCarloSimulations.org  The Monitor Group, Inc.
A resource library for planners interested in learning more about Monte Carlo and other tools to deal with uncertainty. Read "What is Monte Carlo?" and "Why Monte Carlo?" Find events, literature, software, and more.
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 WWW Resources for Teaching Statistics  Robin Lock; Mathematics Dept., St. Lawrence Univ., Canton, NY
A paper presented at Technology in Statistics Education, a 1998 conference for teachers sponsored by the Boston Chapter of the American Statistical Association. Its purpose is to direct readers to typical statistics instruction support sites on the WWW.
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 WWW Virtual School: PreAlgebra  Highview; ThinkQuest 1997
In Highview's 1997 Math program the 7th graders were either in PreAlgebra or PreAlgebra Challenge; the supervising teacher for this page was Mr. Larson. Short essays on: Metric Takeover; Goldbach's Conjecture; Factor Game; and WS: Super Bowl Ad Costs.
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 XLMath SAT Prep: eXtreme Learning for the Math SAT Test
XLMath is an online service designed to improve your score on the math portion of the SAT. It features over 300 SATtype questions with changeable numbers, for practice; timed tests to simulate the actual SAT experience; and recordkeeping features so
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 XLPrep.com  BerryLime.com, LLC
Online service designed to improve your score on the math portion of the SAT, GMAT and CAHSEE. It features over 300 SATtype questions with changeable numbers, for practice; timed tests to simulate the actual SAT experience; and recordkeeping features
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 XNumber World  James Redin
With the Extended Numerical Keyboards with Structured DataEntry Capability method, enter a number in the same way as you think on the number; for example, input one million and fiftyseven with the four keystrokes 1, million, 5, and 7, in that order.
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 XPower Interactive: Educators' Edition  Solutions in Mathematics
XPower Interactive is a full 10 chapter Algebra I multimedia course. XPower reinforces algebra concepts with 3D adventures, mathematical games, interactive tools, handson labs, and much more. For Mac or PC.
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 XPress Formula Editor & Problem Solver  HALOMDA Educational Software
A formula editor and symbolic calculator that enables Graphical WYSIWYG editing of math expressions, drawing graphs, and performing algebraic transformations. Expressions can be copied into Word and solved numerically/symbolically step by
step. For
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 xThink  xThink Corporation
The xThink Calculator recognizes and solves math problems written on pen and tablet; MathJournal also interprets such handwritten mathematics, as well as solves integrals and derivatives, manipulates symbolic math, plots 2D and 3D graphs, outputs to MathML,
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 x, why?  Chris Burke
A "weblog of mathrelated cartoons and images, math humor and general math discussion." This New York City high school teacher's punfilled posts date back to May, 2006: "Why Math Teachers Hate English Majors," "Imperial Unit," "The 0'Factor, episode
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 (x+y)?  Jim Loy
Some people might guess that (x+y)^2=x^2+y^2. But we know that: (x+y)^2 = x^2+2xy+y^2. How do we know that? An application of the distributive law with an illustration and a magic trick...
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 Yahooligans! School Bell: Math  Yahoo
Yahoo's kids' guide to math sites including topics: Games and Puzzles, Geometry, Homework Help, Just the Facts, Mathematicians, Measurements, and Real World Math.
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 Yahoo! Science: Mathematics: History  Yahoo! Inc.
Searchable math history links: Mathematicians, Pi, and miscellaneous links.
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 Yahoo! Science: Mathematics: Numerical Analysis: Numbers: Specific Numbers: Pi  Yahoo! Inc.
A searchable collection of approximately 100 WWW pages having to do with Pi, in the following categories: Calculating Pi; Clubs; Decimal Digits; History; Holidays; Mnemonics; Poems; Search Engines; Web Directories.
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 Yahoo! Science: Mathematics  Yahoo! Inc.
All the best on the Web in math including Indices, alphabetically listed by category: Academic Papers; Algebra; Applied Mathematics; Books; Calculus; Chaos; Combinatorics; Complex Systems; Conferences; Education; Employment; Entropy; Equations; Ethnomathematics;
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 Yahoo! Search Options  Yahoo!
Search all of Yahoo by keyword.
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 Yahoo  Yahoo! Inc.
Search the entire Yahoo database or within categories and subcategories. Major categories include Arts & Humanities; Business & Economy; Computers & Internet; Education; Entertainment; Government; Health; News & Media; Recreation &
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 Yellowstone Caldera  Tina DeBuff; Harlowton High School, Harlowton, MT
This Webquest for high school math and science students requires that they make predictions based on historical data about volcanic activity and damage related to the Yellowstone Park Caldera.
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 YMath Mathematical Models  Jan de Koning
Models and building boxes for education include magnetically connectable "mathmaker" and "polylinks," and tetrahedron puzzles. Other polyhedral furniture and housewares include cube moneyboxes of plywood, copper, and brass; dodecahedron bottle openers;
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 YoeServ Math Help  Yoe Corporation
Pages that include solutions to problems one might encounter when trying to write a computer program or solve some other problem: Finding out how many digits are in a number; Calculating Zscores by integration; The rules of logarithms; Explicit formula
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 Yo Quiero Math  A Collection of Basic Math Tutorials  Lucila Rios
Tutorials (online videos and practice problems) for adult school students seeking to increase their understanding of basic high school Algebra to enter community college or pass the GED or CAHSEE.
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 You Can Do The Rubik's Cube  Rubik's, Seven Towns Ltd.
The You CAN Do the Rubik's Cube Solution Kit offers teachers lesson plans, homework sheets, and answer keys aligned to national standards as well as 19 state frameworks, anchors and 21st Century Skills. Lessons and activities support Geometry, Algebra
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 You Can Understand Mathematics  Stratford Educational Institute
MATH 2000': a 7lesson distance education program that explains difficult college level ideas in terms of an overview or background presentation that students can use to help them understand many of the concepts in their high school math courses.
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 You Have Found The Prisoners' Dilemma (Serendip: Playground)  Bryn Mawr College
Play a nonzerosum game where the best strategy for a given player is often one that increases the payoff to one's partner as well. The rules: on each turn of the game, you and your opponent must choose, without knowing the other's choice; following
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 Young Investor  Columbia Management
Information on investing and investments, along with games and puzzles related to investing. Sections for teachers, parents, and students in grades K12.
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