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  All Sites - 4610 items found, showing 851 to 900

  1. 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>>

  2. 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>>

  3. 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>>

  4. 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>>

  5. 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>>

  6. 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>>

  7. 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>>

  8. 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>>

  9. 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>>

  10. 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>>

  11. 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>>

  12. 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>>

  13. 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>>

  14. 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>>

  15. 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>>

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

  17. 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>>

  18. 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>>

  19. 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>>

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

  21. 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>>

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

  23. 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>>

  24. 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>>

  25. 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>>

  26. 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>>

  27. 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>>

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

  29. Dividing The Plane - Jim Loy
    A line divides the plane into two pieces (regions). Draw another line. The plane is now divided into three or four regions. It is three regions if the lines are parallel, four if they intersect. A third line divides the plane into seven regions. Find ...more>>

  30. 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>>

  31. 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>>

  32. 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>>

  33. 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>>

  34. Division by Zero - Dave Richeson
    A blog about "math, puzzles, teaching, and academic technology." Posts, which date back to September of 2008 and sometimes introduce original applets, have included "Volumes of n-dimensional balls," "Albrecht Dürer's ruler and compass constructions," ...more>>

  35. Division with Roman Numerals - Jim Loy
    Roman numeral division can be very easy or fairly difficult, depending on the two numbers. An example of division by pieces, and a general method using repeated subtraction. ...more>>

  36. Divisor Plot - Jeffrey Ventrella
    "We hear of primes described as the 'building blocks' of all numbers. Let's turn that concept on [its] head. Instead, let's think of primes as the negative spaces behind complex objects. Imagine a series of picket fences stacked in front of each other. ...more>>

  37. DIY Calculator - Clive (Max) Maxfield and Alvin Brown
    Order the book How Computers Do Math, or preview its table of contents. The book's interactive laboratories guide you in the creation of a simple calculator program to run on your DIY Calculator; its accompanying CD-ROM contains a virtual "Do-it-Yourself ...more>>

  38. DLK MathsWork Software
    Self-differentiating, topic-specific math software for Windows 3.1 and above, on number, shape and space, and data handling. All of the practice modules have on screen monitoring at three levels. Six problem modules designed to improve users' application ...more>>

  39. DO MATH...and you can do anything! - National Council of Teachers of Mathematics (NCTM)
    Features grade level-specific mathematical activities that children can do with their families and on their own, as well as links to other sites where children can explore the connections between math and some possible career paths. Also includes a family ...more>>

  40. Domebook - Tom Camilli
    Cardboard and transparent plastic geodesic domes built by children. Students start by constructing paper models, then apply scale factors to construct domes of any size using cardboard or wooden dowels and plastic sheeting. See pictures of classroom projects; ...more>>

  41. Dominoes Activity - Suzanne Alejandre
    A classroom activity (similar to Pentomino + 1 = Hexomino; a variation on polyominoes) aligned to the NCTM and California Standards, to be explored through manipulatives (paper dominoes). Students explore whether it is possible to cover a 6x5 grid with ...more>>

  42. donalduncan's Channel
    Narrated paper and pencil instructional videos -- some, specific to British Columbia's Foundations of Math and Precalculus exams -- on number, line segments and lines, rational expressions, factoring, quadratic functions, functions, exponents, polynomials, ...more>>

  43. Don't Hate No Math - Elio Motella
    Advice for students, parents, and teachers. The document called "Lecture" includes sections such as "The causes of your troubles," "It's called metacognition," and "Mental models and propositional representations"; see in particular Part D, titled "An ...more>>

  44. Doodal - Neil Thapen
    Draw fractals freehand using a computer mouse: select a "brush size" to specify width in pixels, then click and drag in the large orange frame, the contents of which get copied in however many blue frames you specify. To rotate a blue box, click it while ...more>>

  45. Dositey.com - Dositey Corporation
    Interactive lessons, exercises and worksheets, educational games, open-ended questions in Math and Language Arts, and more. ...more>>

  46. Doubling Pennies - Math Forum, a Classic Problem from the Ask Dr. Math FAQ
    Which is more, a million dollars or a penny doubled every day? ...more>>

  47. Doubling the Cube - MacTutor Math History Archives
    Linked essay covering the history of and some solutions to the classical problem in Greek mathematics of doubling or duplicating the cube, also called the Delian problem; and on proving the impossibility of constructing a solution using only ruler ...more>>

  48. Downloads - Mac - Mathematics - CNET Download.com
    Search this site to find a particular piece of software for the Mac, or browse their mathematics listings. ...more>>

  49. Downloads - PC - Mathematics - CNET Download.com
    Search this site to find a particular piece of software for the PC, or browse their mathematics listings. ...more>>

  50. Do You Know That... - Interactive Mathematics Miscellany and Puzzles, Alexander Bogomolny
    A collection of short essays about over 60 curious mathematical facts and terminology, mostly linked to explanatory or exploratory essays, drawn from various parts of Bogomolny's site, Cut-the-Knot. See page two and page three. ...more>>


 
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