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  All Sites - 5517 items found, showing 5051 to 5100

  1. A Thing In Common - Cut the Knot!, Alexander Bogomolny
    Two applets, both of which use the Pythagorean theorem: a puzzle (Draw an {N/D} star polygon - a polygon whose N vertices are uniformly distributed on a circle, but each vertex is connected to its D-th neighbor. Regular polygons correspond to D = 1, and ...more>>

  2. Things I Made From Yarn - Alan Eliasen
    Futureboy's online calculators include a blackjack strategy table, a model solar system calculator (create your own model solar system of any scale), a sun locator (find current position of the sun), a historical currency converter (find out "how much ...more>>

  3. Things Impossible - Interactive Mathematics Miscellany and Puzzles, Alexander Bogomolny
    Essays on impossible things, including trisecting an angle, doubling a cube, squaring a circle, moving pegs five places in one direction (via checker-jumps), finding the center of a given circle with the straightedge alone, representing the square root ...more>>

  4. Think & Derive - Chris Long
    Monthly mathematical columns from May 1994 through April 1996 written for Central New Jersey Mensa's Forvm. Problems and puzzles, many with solutions. ...more>>

  5. ThinkFun - ThinkFun, Inc.
    The makers of Spin Out and Rush Hour seek to "push [you] farther, probe deeper and think more creatively through game play." Brainteaser games include Math Dice, which challenges you to use addition, subtraction, multiplication, division, and exponents ...more>>

  6. Thinking Mathematics! - James Tanton
    Tanton writes wordless volumes of creative and surprising math puzzles, accessible approaches to calculus suitable for standardized test preparation, and curriculum "tidbits." Download his free guides to fractions and "to everything quadratic," and watch ...more>>

  7. ThinkNum - Gregory Ugwi
    A web-based financial data analysis engine. Use regression, curve trades, and other quantitative trading algorithms from scipy, numpy, and similar open source libraries to analyze economic information from hundreds of sources ranging from the ADO National ...more>>

  8. ThinkWave.com
    A free web community that provides secure internet-based communication for parents, students, and teachers: real-time information about attendance, assignments, grades, and school curriculum. ...more>>

  9. Third Apex to Fractovia - Juan Luis Martínez
    Several galleries, each with up to 18 fractal images, and discussions on fractals as art. Also an up-to-date list of freeware fractal generators, screen savers, and fractal music software, with links and reviews. ...more>>

  10. thnik again! - Jan Nordgreen
    "Silly mathematical dialogues aimed to confuse." Nordgreen's daily blog of brain teasers and quotes dates back to November, 2007. ...more>>

  11. Thomas Harriot's manuscripts - MacTutor Math History Archives
    Linked essay: Thomas Harriot died in 1621. He had published no mathematical or astronomical works during his lifetime, but he left his papers in reasonably good order and set out his wishes in his will that they should be properly edited and published. ...more>>

  12. Thorleif's SOMA page - Thorleif Bundgard, Denmark
    Over a thousand figures for these cubes: standard figures (176, all solved); McFarrens figure set (798, all possible); and more. An index of all figures is available. With some SOMA history and a link to a newsletter. ...more>>

  13. Those Amazing Flying Mathematicians - Keith Devlin (Devlin's Angle)
    October is the month when those of us living in the United States see migrating birds moving south for the winter. How do they know which direction to fly?... Assuming that the average bird is not the mathematical equivalent of a college math major, how ...more>>

  14. Thot / Nouvelles de la formation à distance - Denys Lamontagne, Directeur et Rédacteur en Chef
    Une base de données de rubriques: cours, logiciels, références, technologies, didactique, arguments, actions, institutions, revue médias, et communiqués. Aussi, des forums animé et archivés. ...more>>

  15. Three-dimensional Geometry (The Geometry Junkyard) - David Eppstein, Theory Group, ICS, UC Irvine
    An extensive annotated list of links to material on three-dimensional geometry. ...more>>

  16. The Three Jugs Problem - Cut the Knot!, Alexander Bogomolny
    Two friends who have an eight-quart jug of water wish to share it evenly. They also have two empty jars, one holding five quarts, the other three. How can they each measure exactly 4 quarts of water? ... The description of the 3 Jugs problem as a triple ...more>>

  17. Three Years of Computing: Final Report On The Palindrome Quest - John Walker
    A 1990 report on computations on the 196 problem: "Pick a number. Reverse its digits and add the resulting number to the original number. If the result isn't a palindrome, repeat the process. Do all numbers in base 10 eventually become palindromes through ...more>>

  18. Thue Equations - Clemens Heuberger
    A special family of equations F(X,Y) = m, where F is an irreducible homogeneous form of degree n at least 3 and m is a nonzero integer. With a list of special cases that have been solved. ...more>>

  19. TI-83 / TI-84 Games and Programs - Bill Paetzke
    Bill Paetzke offers TI-83/TI-84 Plus programs to help students and teachers be more efficient in using their calculators. The programs are organized under these categories: Algebra, Finance, Geometry, Physics, Programs, Statistics, Trigonometry, and Tutorials. ...more>>

  20. TI84 Basic Programs
    Programs for the Ti84 or Ti83+. Available subjects include: limits, derivates, integrals, differential equations, vector plotting, vector calculating, complex numbers. Also for control systems: Nyquist diagrams and many programs for electrical engineering. ...more>>

  21. ticalc.org
    The unofficial TI-calculator home page. A non-profit, collaborative effort geared toward fans of Texas Instruments' graphing calculators, acting as a headquarters for all available information on the subject. It is also the home of ZShell and Fargo, assembly ...more>>

  22. Tickling the Mind - Ivars Peterson (MathTrek)
    ... Different math teachers may use different styles and methods, and they may favor different topics. However, they all share the goal of building an appreciation of both the usefulness and the intellectual wonder of mathematics. Much of the current ...more>>

  23. Tides and Tide Prediction - Tony Phillips; Dept. of Mathematics, SUNY-Stony Brook
    General information about tides and tide prediction: Priming/Lagging: a calculus with calculators exercise demonstrating the priming and lagging of the tides at Stony Brook. Samples of current tide predictions from the National Ocean Service. TideSounds: ...more>>

  24. TierneyLab Puzzles - John Tierney
    Challenging word problems that "put ideas in science to the test," from The New York Times' science columnist. Solve and comment on the puzzles and their extra credit extensions. See also Tierney's blog entries on mathematics. ...more>>

  25. Tiled CA - Brian Prentice
    An interesting variation on the traditional 2D Cellular Automata simulators, for Windows. ...more>>

  26. Tile.Net - List-Universe.com
    A comprehensive Internet reference site for finding discussion lists (mailing lists); Usenet newsgroups; FTP sites; computer products and vendors; and Internet and Web design companies. Search mailing lists by keyword (algebra, calculus, etc.) to find ...more>>

  27. Tiletris - Oktay Haracci
    A tiling program for aperiodic or periodic tiling. Freeware, for PCs only, running Win 9x/2000. Help, including instructions, available on the site. ...more>>

  28. Tiling and Packing results - Torsten Sillke
    Packing problems, mostly, in English, with some in German. Packing Polycubes and Polyspheres; Tilings with Matching Conditions; links. ...more>>

  29. Tiling Plane and Fancy - Steve Edwards
    The 17 wallpaper groups identify the plane symmetry groups and link to background patterns illustrating them. Tiling Definitions define, with examples, the terms fundamental region, isohedral tiling (isohedral and non-isohedral), isogonal tiling, lattice, ...more>>

  30. Tilings and Geometric Ornament - Kaplan, Salesin
    A project designed to explore the intersection between computer graphics, geometry, and ornamental design. Papers and illustrations on Escherization, Islamic Star Patterns, Parquet Deformations, Symmetrohedra, and Voronoi Diagrams. ...more>>

  31. Tilings (Graphics Archive, Special Topics) - The Geometry Center
    Regular subdivisions of the plane or space. ...more>>

  32. Tilings (The Geometry Junkyard) - David Eppstein, Theory Group, ICS, UC Irvine
    An extensive annotated list of links to material on tilings. One way to define a tiling is a partition of an infinite space (usually Euclidean) into pieces having a finite number of distinct shapes. Tilings can be divided into two types, periodic and ...more>>

  33. Tiling with Polyominoes - Ivars Peterson (MathTrek)
    "Mathematicians have proved that the general question of whether it's possible to cover the plane with identical copies of a given finite set of tiles is, in principle, computationally undecidable. In other words, there's no cookbook recipe or handbook ...more>>

  34. Tilt-A-Whirl Chaos - Ivars Peterson (MathTrek)
    The amusement park Tilt-A-Whirl spins its passengers in one direction, then another... A rider never knows exactly what to expect next. Yet these complicated, surprising movements arise from a remarkably simple geometry. A passenger rides in one of seven ...more>>

  35. TI Math - Texas Instruments, Inc. (TI)
    Activities (by subject and technology type), events, research, professional development, and resources, for the high school crowd and beyond. ...more>>

  36. Timelines and Scales of Measurement - Niel Brandt
    TEX, DVI, PDF, Postscript, and ASCII files: Science / Technology History Timeline; Evolutionary / Geological Timeline; Cosmological Timeline; Scales of Measurement. ...more>>

  37. Time Series Analysis and Forecasting; AUTOBOX - Automatic Forecasting Systems (AFS) Corporation
    Autobox for Windows provides forecasting based on the Box-Jenkins model-building process, implemented for both ARIMA (univariate) modeling and Transfer Function (multivariate or regression) modeling. Features, prices, faqs, support, and mathematical information ...more>>

  38. TI-Nspire: Taking Learning to New Heights - Marc Garneau
    A blog about the TI-Nspire™ graphing calculator, and its use in the classroom. Includes Garneau's handout from the T^3 International Conference in Seattle, 2009, on Tips and Tricks for the TI-Nspire. ...more>>

  39. Tips & Tricks to Gothic Geometry - Joe Chiffriller; NewYorkCarver.com
    The geometry of gothic cathedrals: how to construct a trifoil design, an ogee arch, and a rose window. With links to cathedral and castle tours. ...more>>

  40. Tomoko Fuse Origami Quilts - Jeff Kerwood
    These origami quilts were designed and made by Jeff Kerwood, using the modules developed by Tomoko Fuse, a Japanese origami artist universally acknowledged as the master of modular or unit origami. In modular origami, the model is built up from multiple ...more>>

  41. Tomás Oliveira e Silva
    From an assistant professor in the Electronics and Telecommunications Department of the University of Aveiro, Portugal. On the Collatz problem: maximum number tested (N): 912^50 = 102456891522678784. ...more>>

  42. Tony Phillips - Dept. of Mathematics, SUNY-Stony Brook
    Ongoing Web math projects: Honors Calculus; Visualizing Women in Mathematics, the Physical Sciences and Technology; Calculus Reform; Geometry of the Binary Tetrahedral Group in SU(2); Mazes; Tides; Integrating Research and Education (RAIRE); Math Photo ...more>>

  43. Tools for Decision Analysis: Analysis of Risky Decisions - Hossein Arsham
    Decision making under risk is presented in the context of decision analysis using different decision criteria for public and private decisions based on decision criteria, type, and quality of available information, together with risk assessment. Also ...more>>

  44. Tools for Exploring Mathematics (TEMATH) - Mathematics Dept., UMass Dartmouth
    A software package useful for learning and teaching algebra, precalculus, calculus, linear algebra, and applied mathematics, with a graphical interface that makes it easy to use for the computer novice. Information about TEMATH, a tour of the programs, ...more>>

  45. Too Much to be a Coincidence? (Math Chat) - Frank Morgan, MAA Online
    Answer to the Challenge: In the September ACBL Bridge Bulletin, Noreen Wurdemann of the Bahamas reports that the two bridge hands below were dealt out at her club. She says that she is "100% certain there was no hanky-panky." What is the probability of ...more>>

  46. Top 100 Mathematics Software - Adam Testad, Kuala Lumpur, Malaysia
    A top 100 list of mathematics software: shareware, freeware, payware, some hardware, and some Web sites. A selection from over 24,000 products with references to download sites, suppliers page, and PC literature references. ...more>>

  47. Topical Index of Internet Resources (The Chaos Hypertextbook) - Glenn Elert
    An extensive list of links to sites related to Elert's Chaos Hypertextbook. Major categories include: Chaos (Dynamical Systems); Dimension; FAQs; Feigenbaum Constants (Bifurcation Diagrams); Fractals; Image Compression; Iterated Function Systems (IFS); ...more>>

  48. Topics in Arithmetic and Elementary Mathematics - E. Lee Lady; University of Hawaii
    Materials used in a university course for prospective elementary school teachers, to teach them how to be interested in mathematics. Materials are in PDF and DVI, and include: representing numbers in other bases, divisibility tests, periodic decimal expansions, ...more>>

  49. Topics in Calculus - Alan Cooper, Dept. of Mathematics & Statistics, Langara College
    Calculus resources for college students: a topic-by-topic guide to Web-based materials. Topics include: Precalculus review; limits and continuity; derivatives; approximation; antiderivatives; integration; infinite series; parametric equations; polar coordinates; ...more>>

  50. Topics in Calculus - E. Lee Lady; University of Hawaii
    Files in PDF, DVI, and Postscript formats, to help students learn to use calculus in applications and to have confidence in setting up formulas using derivatives and integrals. Contents include: a conceptual approach to applications of integration, max-min ...more>>


 
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