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  All Sites - 4703 items found, showing 851 to 900

  1. Developing Quality in Mathematics Education - Christof Höger
    Download Microsoft documents of short word problems and their solutions, each categorized by age and tested for use in the classroom. Developing Quality in Mathematics Education (DQME) received support from the European Commission. Also available in Danish, ...more>>

  2. Diario Fractal - Today´s Fractal - Juan Pablo Braña
    A site from Buenos Aires, in English and Spanish, with a different fractal art image every day and archived galleries of past images. ...more>>

  3. Dice and Valentine's Day Symmetries (Math Chat) - Frank Morgan; Christian Science Monitor
    A dice challenge from S. H. Logue: The six faces of four dice have these numbers on them: A 1 1 5 5 5 5 B 4 4 4 4 4 4 C 3 3 3 3 7 7 D 2 2 2 6 6 6. You and your opponent each choose one die to use throughout the game. Each round you both roll, and the ...more>>

  4. Dictionary of Number Words - Intergalactic Power & Light
    A dictionary of English language words, phrases, prefixes, suffixes, and symbols that describe numbers. Cardinal Numbers, Ordinal Numbers, very large numbers, Noninteger Real Numbers, Numeric Ranges. ...more>>

  5. A Dictionary of Units - Cleave Books
    A summary of units of measurement world-wide (current units and a few of historical interest); conversion factors to the SI (Systeme International); an outline of the SI; its basic defining standards and some of its derived units; all the SI prefixes ...more>>

  6. Didax Educational Resources
    Didax publishes and distributes books, manipulatives, and software for math, reading, science, and art. The site offers free demo software, product descriptions, information requests, technical support, and current national educational standards. Didax ...more>>

  7. Did You Know? Applications of Statistics - Ian Gordon; University of Melbourne, Australia
    Short stories about the application of statistics in different fields: Analysis of Gambling Strategies; Random surgical operations; TV phone-in polls; Was it the orange juice?; Sunlight and skin cancer; Fire-fighters cause damage?!; What was the question ...more>>

  8. Digital Deletions - Pierre Ysewijn
    An interactive JavaScript version of Conway's Digital Deletions game, in which numbers in a string are lowered to zero or erased. Users can play with different numbers of digits, different strategy levels, different starters, different sources of digits ...more>>

  9. Digital Generation Unit Conversions - Digital Generation
    Choose from 26 different categories of engineering and scientific units. Also available at http://www.webcom.com/legacysy/convert2/convert2.html and http://www.legacysy.com/~legacysy/convert2/convert2.html. ...more>>

  10. DigitalLesson.com - Mark Tully
    Website for middle school math teachers that has middle school math lessons, games, projects and activities for use in the classroom. Free newsletter, other resources for sale. ...more>>

  11. DigitalLesson.com: Middle School Math Downloads - Mark Tully
    Free printable math games, a free PowerPoint Mathegories game, and a free newsletter for middle school math teachers five times per school year. DigitalLesson.com also offers downloads of middle school math lessons, projects, and games at reasonable ...more>>

  12. Digital Library: Science, Mathematics, Engineering and Technology Education (SMETE) - NEEDS
    This site contains a searchable working prototype of a National Science, Mathematics, Engineering, and Technology Education Digital Library; a prototype federated search for the math community and the American Mathematics Metadata Task Force (AMMTF); ...more>>

  13. Digital Library - The Exploratorium, San Francisco
    The Exploratorium A-to-Z. Archived webcasts, web cams, past exhibitions: stills, movies, sounds, and other experimental items. Online versions of a few of the Exploratorium's interactive exhibits; the Exhibit Cross-Reference - an experimental database ...more>>

  14. 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), ...more>>

  15. Digital Math - Santa Barbara County Education Office
    A site to assist Algebra I, Grade 7, and Grade 6 students, their parents, and educators with the California State Mathematics Content Standards. Log in for Quicktime that provides step-by-step instruction to solve problems aligned with the mathematics ...more>>

  16. Digital Promise
    Improving the opportunity to learn for all Americans, and accelerating innovation in education, through technology and research. Initiatives include Digital Promise Schools, in partnership with Verizon; the League of Innovative Schools; educator micro-credentials, ...more>>

  17. The Digit Connection - Lizzie
    A tribute to the number pi through music, poetry, and fiction. (Meet Sailor Pi!) Also includes a brief history of pi with some ways to calculate it, a quote collection, and ways to celebrate the number - even if it's not Pi Day. ...more>>

  18. Digits, Squares, and Cycles - Ivars Peterson (MathTrek)
    Fascinating patterns lurk among the digits of whole numbers. Pick a positive integer, such as 57. Square each of the digits, then add the squares together: 5^2 + 7^2 = 25 + 49 = 74. Do the same thing with the digits of 74: 7^2 + 4^2 = 49 + 16 = 65. Keep ...more>>

  19. DIMACS - Rutgers & Princeton Universities, AT&T Bell Labs, BellCore
    The Center for Discrete Mathematics and Theoretical Computer Science, an NSF Science and Technology Center. DIMACS is devoted to the development of the interrelated fields of discrete mathematics and theoretical computer science, among the most rapidly ...more>>

  20. Dimensions - Étienne Ghys et al.
    "Mathematical vertigo guaranteed": this free, two hour-long film gradually takes viewers up to the fourth dimension. Available in many languages, and as a DVD. ...more>>

  21. DimensionU
    Creators of educational software that put the action adventure fun of mainstream video games in a learning environment that prepares students for high stakes exams. First person shooter games Dimenxian, Evolver, and Meltdown contain 3-dimensional virtual ...more>>

  22. Dipping math scores heat up debate over math teaching... - Bridget Murray, American Psychological Association (APA) Monitor
    ... psychologists differ over the merits of teaching children 'whole math'. An APA newsletter article that outlines the debate over the effectiveness of whole math, a demonstrative approach where manipulatives help children understand math concepts. "Some ...more>>

  23. Disabilities and Math Anxiety - Math Forum, Teacher2Teacher FAQ
    Answers to a frequently asked question: How can I help my child who has a physical or learning disability? ...more>>

  24. Discoveries & Breakthroughs Inside Mathematics - American Mathematical Society (AMS)
    Read articles and watch video news segments about the latest discoveries and applications of mathematics: "Do the Math Dance," "Mathematician Calms the Skies with Turbulence Detection Algorithm," "Become a Smarter Shopper," "The Science Behind Movie Magic," ...more>>

  25. Discover Magazine - The Walt Disney Company
    The monthly magazine of science and technology. Covers space, biology, health, medicine, AIDS, computers, new technology, the environment, astronomy, ancient life, archeology, evolution, physics, mathematics, ecology, and more. Available online: selected ...more>>

  26. Discover TI Neighborhood Workshops - Texas Instruments, Inc.
    The free Discover TI Neighborhood Workshop provides a hands-on beginner's introduction to TI graphing technology. There will be 25 workshops throughout the United States. There is a choice of six different topics that appeal to middle school and high ...more>>

  27. Discovery and Conjecture - Kim Van Duzer
    Blog by a 2nd grade teacher at a public school in Brooklyn, New York. Van Duzer, who co-founded the NYC Math Lab, describes hereslf as "especially interested in teaching math in ways that encourage sensemaking and joy, in creating equitable math communities, ...more>>

  28. discretemath - Math Forum
    A discussion group for subject matter concerning teaching and researching of discrete mathematics at all levels. It began as a closed list for the researchers and educators who participated in the Rutgers University Discrete Math and Theoretical Computer ...more>>

  29. Discrete Math Problem of the Week (PoW) - Math Forum
    Discrete math problems from a variety of sources, including textbooks, math contests, NCTM books, and puzzle books, and real-life situations, designed to reflect different levels of difficulty. From 1999 until 2002, this service challenged students with ...more>>

  30. Discussing Undergraduate Mathematics Education on the Internet - Steve Weimar for MAA Online; The Math Forum
    Descriptions of good math discussion groups: what kinds of conversations you will find, how to access them, etc. Teaching and learning mathematics: MATHEDU, AMTE, MATHEDCC, DEVELOPMENTAL MATH. Topic-specific lists: MATH-HISTORY-LIST, AP-CALC, AP-STAT, ...more>>

  31. Discussion Groups: Technology - Texas Instruments
    Read, search, and post to groups about TI products: Scientific Calculators, TI-10, TI-73, TI-80/81, TI-82/83/83 Plus/Silver Edition, TI-85/86, TI-89/Voyage 200/TI-92 Plus, CAS and Symbolic Math Guide, Graphing Calculator Comparisons, Derive, muLISP, TI ...more>>

  32. Discussion of Block Scheduling - Kidsphere K-12 Mailing List
    Dan Johnson, a teacher, describes block scheduling in his school: over 90% of faculty and students favored the new schedule. Discussion of some advantages and disadvantages. ...more>>

  33. Discussions - Math Forum
    The Math Forum's discussions include mathematics and math education-related newsgroups, mailing lists, and Web-based discussions. Read recent and older messages, find out how to subscribe to a mailing list that interests you, read an MAA Online article ...more>>

  34. Disfruta Las Matemáticas - Rod Pierce, mathsisfun.com
    Spanish language version of Maths is Fun. ...more>>

  35. DISME: The Art of Tenths - Simon Stevin
    Definitions appertaining to Arithmeticall whole Numbers. Decimall arithmetike, Teaching how to performe all Computations whatsoeuer, by whole Numbers without Fractions, by the foure Principles of Common Arithmeticke: namely, Addition, Substraction, Multiplication, ...more>>

  36. Dissections: Plane & Fancy - Greg Frederickson, Cambridge University Press
    A book that explores an area of mathematical recreations, called geometric dissections, or the cutting of one or more figures into pieces that can be rearranged to form other figures. With an emphasis on using as few pieces as possible, these geometrical ...more>>

  37. Distance Calculator Between Cities - Dan Gallagher
    Enter two cities or countries and this CGI illustrates them on a scaled political map, calculates the distance between the two locations in miles and kilometers, and provides information about latitude, longitude, bearing, and airports. All latitude and ...more>>

  38. Distance, Rate, and Time - Math Forum, Ask Dr. Math FAQ
    Distance = Rate x Time: A discussion and two problems. ...more>>

  39. Distance Recipe (Geometry and the Imagination) - Conway, Doyle, Gilman, Thurston; The Geometry Center
    A technical definition of how to compute distance. Examples of distances; The Unit Disc Model; Passing from one model to another... ...more>>

  40. Divide! - Andrew Starr
    A web page used to demonstrate that if you divide any two integers, eventually the decimals will repeat. ...more>>

  41. Dividing 12-foot Boards - NASA Lewis Learning Technologies Project
    Lewis needs 1,500 boards to build a small rocket. Each board must be 3 feet long. If boards are sold in 12 foot lengths, how many boards must Lewis buy and cut into 3 foot pieces to get the 1,500 he needs? A detailed answer is provided. From NASA's 9th ...more>>

  42. Dividing by 0 - Math Forum, Ask Dr. Math FAQ
    Why can't you divide by 0? Why is 0/0 "indeterminate" and 1/0 "undefined"? Why is dividing by zero "illegal"? ...more>>

  43. Dividing Decimals - NASA Lewis Learning Technologies Project
    Dividing decimals: What is 12.8 divided by .04? A detailed answer is provided. From NASA's 9th Grade Math Proficiency Test. ...more>>

  44. Dividing: Fractions and Mixed Numbers - NASA Lewis Learning Technologies Project
    What is 1 1/2 divided by 1/2? A detailed answer is provided. From NASA's 9th Grade Math Proficiency Test. ...more>>

  45. Dividing Fractions - Math Forum, Ask Dr. Math Common Question
    A selection of answers to questions about dividing fractions, including an explanation of the "invert-and-multiply" rule. ...more>>

  46. Dividing Fractions - Math Forum, Ask Dr. Math FAQ
    How do you divide fractions? Say, 2/3 divided by 3/4. ...more>>

  47. Divisibility Rules - Calculation Tips & Tricks, The Math Forum
    Tips for figuring out whether a number can be divided by the numbers 3-13, with a Spanish translation and an explanation of why the rules work by Robert L. Ward. ...more>>

  48. Divisibility Rules - Math Forum, Ask Dr. Math FAQ
    How can you tell whether a number is divisible by another number (leaving no remainder) without actually doing the division? Why do 'divisibility rules' work? ...more>>

  49. Divisibility Rules to 50 and Beyond - Stephen D.T. Froggatt; Math Forum, Ask Dr. Math FAQ
    A quick way of testing primality of larger numbers: the idea of deleting the last digit and adding or subtracting a multiple of the digit from the remaining number can be generalized to test for divisibility by prime numbers up to 50 and beyond. ...more>>

  50. Divisibility War - Diane Reed
    A game designed for secondary level students studying basic mathematics to use the divisibility tests to determine whether a number is divisible by 2, 3, 4, 5, 6, 9, and 10. ...more>>

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