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  All Sites - 1961 items found, showing 401 to 450

  1. 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>>

  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. Diophantine geometry in characteristic p: a survey - José Felipe Voloch
    An article that appeared in Arithmetic Geometry, F. Catanese, ed., Symposia Mathematica XXXVII, Cambridge Univ. Press, 1997, pp. 260-278. Introduction; Curves; Abelian varieties and their subvarieties; Diophantine Approximation in characteristic p; Omitted ...more>>

  4. 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>>

  5. 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>>

  6. Discovering Geometry Newsletter - Key Curriculum Press
    A free biannual publication providing information and teaching techniques for The Geometer's Sketchpad software package, the Discovering Geometry Newsletter is a resource for those interested in geometry and technology education. Download PDFs of past ...more>>

  7. 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>>

  8. Discrete Fourier Series Transform - Eric Brasseur
    A brief introduction to the discrete Fourier transform and its application to signal sampling. Also available in French. ...more>>

  9. Discussiones Mathematicae - Borowiecki; Technical University of Zielona Góra, Poland
    Four journals: Differential Inclusions, Control and Optimization; General Algebra and Applications; Graph Theory; and Probability and Statistics. Information for each journal includes a general description, subscription information, list of editors, ...more>>

  10. Disorder in the Deck - Ivars Peterson (MathTrek)
    About 30 years ago, tournament bridge players started using computer-shuffled rather than hand-shuffled decks. Almost immediately, there was an outcry protesting the apparently wild fluctuations in the distribution of cards of different suits in computer-dealt ...more>>

  11. Distributed Maple - Wolfgang Schreiner; RISC-Linz, Johannes Kepler Universität Linz
    A system for writing parallel programs in the computer algebra system Maple, so that different computers in a network can perform parts of the same computation. The program may be downloaded here in .tar or .zip form. The manual, a README file, and papers ...more>>

  12. Divide and conquer for quantum computers - Ivars Peterson - Science News Online
    In theory, quantum computations can be speeded up significantly by letting many quantum computers work together in parallel on data encoded as particles in an entangled quantum state. ...more>>

  13. Divisibility Criteria - Interactive Mathematics Miscellany and Puzzles, Alexander Bogomolny
    A definition of some divisibility criteria, and their derivation from modulo arithmetic, with links to related pages. ...more>>

  14. Division by Three [PDF] - John Conway, Peter Doyle
    A formal proof that it is possible to divide by three. This assertion is easy to prove using the axiom of choice, but becomes a much more difficult problem if the axiom of choice is not allowed (as is the case here). From this proof, and the much simpler ...more>>

  15. D. J. Bernstein
    Courses, research articles (in dvi format), and a list of available software, listed by a professor of mathematics and computer science at the University of Illinois. Pages are also listed by topic. Also at ftp://koobera.math.uic.edu/www/djb.html. ...more>>

  16. Dmitry Gokhman
    Papers (Hardy fields; Differential fields of complex germs; Applied mathematics), Class lecture notes and summaries, code (IGF, LibPS 2, Python, Perl, TeXtool 2.12a), courses, translations, guests. ...more>>

  17. DNA Adds Up - Ivars Peterson (MathLand)
    Calculating that 0 + 0 = 0, 1 + 0 = 1, and 0 + 1 = 1 is normally no big deal. When the calculations are done in the lab using DNA molecules, however, these elementary manipulations look considerably more interesting. In the July 12 [1996] Science, a team ...more>>

  18. DNA, Computers, and Killer Apps - Ivars Peterson (MathLand)
    When computer scientists look at DNA, they see information storage and processing. They view the four bases of DNA as something akin to the zeros and ones of the binary code by which computers store and process information. They look for algorithms, theorems, ...more>>

  19. Does March Madness need a time-out? - J. Travis - Science News Online
    Suggestions about the effects of circadian rhythms, daily cycles of physiological activity that every organism experiences, and changes in time zone (causing 'jet lag'), on sports teams. ...more>>

  20. Dominique Foata
    Dominique Foata is a mathematician specializing in combinatorics. Abstracts of his papers are available online, and they may be downloaded in .dvi, PostScript, or TeX formats. The site also contains a summary and errata for the textbook Calcul des Probabilités, ...more>>

  21. Doodling and Miracles - Cut the Knot!, Alexander Bogomolny
    Almost 100 years ago, Frank Morley proved a curious theorem from elementary geometry that had remained unknown until 1899. With time, the theorem became known in mathematical folklore as Morley's Miracle (Morley's Trisector Theorem is a more mundane term.) ...more>>

  22. Doron Zeilberger's Electronic Headquarters
    Doron Zeilberger researches combinatorics using computer programs. The site is notable for his Opinions page; these opinions are wide-ranging but touch upon mathematics education, the use of computers, and the value of incomplete proofs. All of Zeilberger's ...more>>

  23. Do software engineers need mathematics? - Keith Devlin (Devlin's Angle)
    Software engineers don't use their college mathematics, but they make use of their college mathematics education every day. Brains are perhaps the world's best examples of an adaptive system. When we subject the human brain to an extended educational ...more>>

  24. Do the Math - Slate
    A topical series about math in culture, politics, psychology, and other popular themes, many written by math professor Jordan Ellenberg. Articles, which date back to June, 2001, have included "Barry Bonds and the Placebo Effect," "Algebra for Adulterers," ...more>>

  25. Dot Patterns and Sierpinski Gasket - Cut the Knot!, Alexander Bogomolny
    How many ways are there to define the Sierpinski gasket (also, the Sierpinski triangle)? The author has counted a respectable 9 but would be happy to learn of more. An applet with rows of digits or circles with colors corresponding to the digits shows ...more>>

  26. Dots and Boxes - Ivars Peterson (MathTrek)
    The familiar pencil-and-paper game of Dots-and-Boxes can be played on several different levels of sophistication. Elwyn Berlekamp posits that the game can be played on at least four different levels. "Players at any level consistently beat players at ...more>>

  27. Double Bubble Conjecture Proved (Math Chat) - Frank Morgan, MAA Online
    Four mathematicians have announced a mathematical proof of the Double Bubble Conjecture: that the familiar double soap bubble is the optimal shape for enclosing and separating two chambers of air. In an address to the Undergraduate Mathematics Conference ...more>>

  28. 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>>

  29. Downloadable Articles, Papers & Materials - Michael de Villiers; Mathematics Education, Univ. of Durban-Westville, South Africa
    Articles by Villiers related to geometry and geometry education some in PDF format, including: An Extended Classification of Quadrilaterals; A Mathematical Treasure Hunt; Place Kicking Locus in Rugby; Sketchpad Solutions and Results; A Dual, and Generalizations, ...more>>

  30. 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>>

  31. A Dozen Reasons Why Schools Should Avoid Filtering - From Now On (FNO)
    Why schools should not block access to particular sites: filters may not work very well;. they may work too well; they may increase attention to SMUT and spur motivation; their ongoing cost may block better programs from your students; they may create ...more>>

  32. The Drills To Play - Cut the Knot!, Alexander Bogomolny
    An exploration of a detail found at the beginning of Kurt Godel's biography by John Dawson, how repetition and practice constitute an integral and necessary part of the learning process; that, by implication, one first conceives an idea, then proves it ...more>>

  33. Dr Len Fisher: Opening the Door to Science - Len Fisher
    Fisher concentrates on the science of the everyday and making science accessible. His latest book is Rock, Paper, Scissors: Game Theory in Real Life. The site contains excerpts from his books as well as descriptions of his talks, articles about his work, ...more>>

  34. Drums That Sound Alike - Ivars Peterson (MathLand)
    Peterson writes that physicists and mathematicians have long recognized that the shape of the boundary enclosing a membrane plays a crucial role in determining the membrane's spectrum of normal-mode vibrations. He outlines the progress made on Mark Kac's ...more>>

  35. The Dynamical Systems and Technology Project at Boston University - Robert L. Devaney; Dept. of Mathematics
    An NSF-sponsored project designed to help secondary school and college teachers of mathematics bring contemporary topics in mathematics (chaos, fractals, dynamics) into the classroom, and to show them how to use technology effectively in this process. ...more>>

  36. Dynamical Systems on the Torus - Paul Trow
    An illustrated essay introducing dynamical systems on the torus. ...more>>

  37. dynamical-systems.org
    An interactive laboratory on dynamical systems, in particular on particle systems. Software, Documents, and Links. Animated features include: Nonlinear chain; Forced Pendulum; Fermi system; Vlasov billiards; Vortex motion; 3 Body Problem; Convex Billiards; ...more>>

  38. Dynamic Geometry - Goldenberg, Scher; Education Development Center, Inc.
    To understand how students construct mathematical ideas in "Dynamic Geometry" environments (tools like Geometer's Sketchpad and Cabri), one needs clear characterizations of the mathematical "raw materials" embodied in the software and how students use ...more>>

  39. Dyscalculia.org - R. M. Newman
    Learn about dyscalculia: definitions, cognitive research, symptoms, diagnosis and best practices, classroom techniques, home learning aids, legal questions, papers such as "Developmental Perspectives on Dyscalculia: Implications for Teaching in the Middle ...more>>

  40. Dyslexia Symptoms & Dyslexia Signs - Benetta Strydom
    A resource on the symptoms of dyslexia, including the possible effects of this disorder on math and handwriting. ...more>>

  41. Early Career Profiles: Recent bachelors-level graduates in the mathematical sciences - American Mathematical Society
    A collection of profiles of alumni from a variety US colleges and universities who majored in mathematics. Each profile includes statements of what the alumnus or alumna now does, the math each uses on the job, the recent graduate's educational background, ...more>>

  42. Early Mathematics Education Project - Erikson Institute
    "A solid early introduction to the 'big ideas' in mathematics can help a child succeed in school later on...." Read about Erikson Institute's teacher education workshops for foundational math, pedagogical research on the whole teacher approach by Jie-Qi ...more>>

  43. Easymaths SA - Maggie Verster; Mathematics Web Association of South Africa
    A free South African site for teachers, parents, and students, with lessons, tests, articles, worksheets with answers, study skills information, and more. ...more>>

  44. Economic and Game Theory - David K. Levine, Department of Economics, UCLA
    A site that uses the tools of modern economic theory and game theory to explore how the interaction of intelligent goal-seeking individuals determines social outcomes. The site offers general interest material, undergraduate and graduate course material, ...more>>

  45. Economic Research Service (ERS) - U.S. Department of Agriculture
    This agency studies agriculture, food and nutrition, the environment, rural development, and international trade. Research reports, press releases, commodities reports, books, and other publications available online or for download in PDF format, with ...more>>

  46. Ed Dickey's Home Page - Ed Dickey
    Syllabi for courses on teaching in middle/high school (mathematics), teaching mathematics with manipulatives (grades 7-12), graphics calculators in high school mathematics, computers in mathematics education, technology to support instruction, technology ...more>>

  47. Ed Laughbaum, Ohio State University
    Research papers include Developmental Algebra with Function as the Underlying Theme; Graphing Technology - Tool of Choice for Teaching Developmental Mathematics; Using Data to Promote Mathematical Understanding; Sharp Corners, Rates of Change, Systems ...more>>

  48. Educação Matemática e Novas Tecnologias - Gravina, Barreto; Universidade Federal do Rio Grande do Sul (UFRGS)
    Discusses new technologies as resources for the learning of Mathematics: software descriptions, lesson plans, articles. In Portuguese. ...more>>

  49. Educational Resources Information Center (ERIC) - National Library of Education
    A national information system designed to provide users with ready access to an extensive body of education-related literature. ERIC Sites links to clearinghouses, support components, and publishers of ERIC material. Special Projects include the Education ...more>>

  50. Educational Technology Center (ETC) - Harvard Graduate School of Education
    The Educational Technology Center was formed in 1983 to explore two hard issues: topics or broad areas of concern for educators deemed difficult for learners; and issues of implementation, broadly conceived. What are the obstacles and sources of support ...more>>


 
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