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  All Sites - 4643 items found, showing 4301 to 4350

  1. 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>>

  2. Topics in Mathematical Recreations
    Arithmetic and geometric puzzles; polyhedra; fractals and chaos; board and positional puzzles; pi and its calculations, and tiling patterns, which can be thought of as making an infinite polyhedron. Includes a bibliography ranging from Abbott's Flatland ...more>>

  3. Topology and Geometry Software: Fun and Games - Jeff Weeks
    Fun math toys for all ages, from the author of Exploring the Shape of Space (grades 6-10) and The Shape of Space (grades 12-16). Applets and software for various platforms. Play with tic-tac-toe, mazes, and the like, on a torus or Klein bottle. Draw ...more>>

  4. Topology (Geometry and the Imagination) - Conway, Doyle, Gilman, Thurston; The Geometry Center
    Topology is the theory of shapes that are allowed to stretch, compress, flex and bend, but without tearing or gluing. For example, a square is topologically equivalent to a circle, since a square can be continously deformed into a circle. As another example, ...more>>

  5. TopSecretMath.org - Donald Endriss
    Step-by-step JavaScript tutorials for learning how to factor several different kinds of trinomials using the C-A-B method. ...more>>

  6. Tostaky.Biz - Jerome Verstrynge
    JavaScript utilities formatted for the smaller screens of tablets and smartphones: timer, stopwatch, world clocks, and other timekeeping tools; and unit converters for area, force, length, torque, weight, and more. ...more>>

  7. Totally Tessellated - Bhushan, Kay, & Williams
    A comprehensive introduction to tessellations and tilings - the basic underlying mathematics and examples of tessellations in real life. The highly illustrated, printer-friendly site includes history (tessellations in mathematics and science, decorative ...more>>

  8. Tour: M.C. Escher - Life and Work - National Gallery of Art, Washington, DC
    A tour of four virtual rooms devoted to the art of M. C. Escher. For each graphic a larger picture with accompanying commentary is available by clicking on a small picture. The gallery has more than 400 works by Escher with many images available on-line. ...more>>

  9. Tournament of Towns - Math Net, University of Toronto
    A worldwide problem solving competition in mathematics. The contest attracts students of all mathematical interests and abilities with its inclusive rules and creative problems -- some as challenging as those of the International Mathematical Olympiad. ...more>>

  10. A Tour of Fractions - Math Forum
    The Web often seems more like a maze than an organized set of resources. To help you find what you need, the Math Forum presents a 'tour' of fractions, offering links to lessons, activities, and materials, questions and answers from Ask Dr. Math, and ...more>>

  11. Tous pour les mathématiques au collège - David Monbru
    Courses mathématiques de niveaux sixième, cinquième, quatrième, et troisième. Exercises avec auto-validation incluent calculs avec ou sans parenthèses; calculs de fractions; opérations sur les nombres relatifs; ...more>>

  12. The Tower of Hanoi - Andrew Cumming
    Interactive version of the famous logic puzzle, in html and VRML versions, with a separate page about solving it. ...more>>

  13. Tower of Hanoi - Math Forum, a Classic Problem from the Ask Dr. Math FAQ
    There are three posts. Disks of different sizes are placed on the lefthand post, arranged by size with the smallest on top. You are to transfer all the disks to the righthand post in the fewest possible moves, without ever placing a larger disk on a smaller ...more>>

  14. Tower of Hanoi on the Web - Miroslav Kolar
    The legend: A group of Eastern monks are the keepers of three towers on which sit 64 golden rings. Originally all 64 rings were stacked on one tower with each ring smaller than the one beneath. The monks are to move the rings from this first tower to ...more>>

  15. Tower of Hanoi (SMILE) - Paul Eubanks, Washington High School
    A lesson for grades 6-12 designed to teach students to discover a pattern and to evaluate an exponential expression. From the Patterns and Logic section of a collection of almost 200 single concept lessons by the Science and Mathematics Initiative for ...more>>

  16. Toys from Trash - Arvind Gupta
    Step-by-step photographic instructions for building elegantly simple, colorful "Math Magic" do-it-yourself manipulatives: Abacus, Flexagon, Triangle Grid, Flat Flexagon, Slipper Insets, Folding Pentagon, Tangram, Paper Octagon, Cylinder and Cone, Area ...more>>

  17. Trachtenberg Basic Multiplication Tutorial - Moshe Berlin
    TracMath is a freely downloadable tutorial (MS Windows) for the basic system of Trachtenberg Multiplication. This system teaches a set of algorithms that perform the same function as the times tables. When students ask "How does it work?" you can use ...more>>

  18. Trachtenberg Speed Math - Alpha Centauri Software
    Software that teaches Jakow Trachtenberg's speed system of basic mathematics that he invented while imprisoned by Hitler during WWII. For Windows only. Demo version available. ...more>>

  19. Trachtenberg Speed System - Math Forum, Ask Dr. Math FAQ
    An introduction to Trachtenberg's system of performing high-speed multiplication, division, addition, subtraction, and square root, all in one's head, with references. ...more>>

  20. Tracking - Education Week on the Web
    Should schools -- as the engine of democracy -- provide relatively similar curricula for all students? Or should they instead sort students by skill levels and prepare them for their different roles as adults? A discussion of the pros and cons of tracking, ...more>>

  21. Tractrix Java Applet Class - PHD Computer Consultants Ltd
    Download Tractrix.zip, a Java applet that makes the kind of pretty swirling patterns which Dutch mathematician Huygens originally named in 1692. Specify applet width and height, background and foreground color, coordinate pairs that will identify corners, ...more>>

  22. Traditional Schooling: Articles and Research - Carolyn K., Hoagies' Gifted Education Page
    Articles and reports on traditional schooling issues: Academic Acceleration; Advocacy; Bullies; Curriculum Adjustments; Early (or late) Kindergarten; Educational Theories; Grouping; Individualized Education Profiles (IEPs); Mentors; Success Stories; Testing ...more>>

  23. Traffic Jam - Math Forum
    Equal numbers of people face each other with one open slot between them. Everybody faces the open slot. If there are 6 people there will be 7 slots, 6 of which must always have people in them. People must attempt to exchange places without turning around. ...more>>

  24. Traffic Signs - Richard C. Moeur
    Graphics of the most commonly used traffic signs in the United States, useful for challenging students to find symmetrical signs (in addition to polygons). ...more>>

  25. Transformations - David A. Reid
    A transformation is a one-to-one mapping on a set of points. The most common transformations map the points of the plane onto themselves, in a way which keeps all lengths the same. These transformations are called isometries. Another common sort of transformation ...more>>

  26. Transversal of a Latin Square - Jay's Corner
    A transversal in a Latin Square is a collection of positions, one from each row and one from each column, so that the colors that are in these positions are all different. This page shows an example of a transversal in a 4x4 Latin square See also Transversals ...more>>

  27. The Travelling Salesman's Problem - Manu Konchady
    A trucking or delivery company is focused on optimum delivery cost. This can be achieved by using a system which determines the best highway route for each load. An optimum highway route can be displayed on a map. A route with 16 nodes is used to test ...more>>

  28. Travel Triangles (SMILE) - Sarah Barrett, Mars Hill School
    A middle and high school geometry lesson designed to teach students to review and demonstrate an understanding of the three kinds of angles (by degrees). From the Geometry and Measurement section of a collection of almost 200 single concept lessons by ...more>>

  29. The Treb Challenge - GlobalSpec, Inc.
    Custom build a trebuchet for three challenges: distance, accuracy, and power. Between launches, continue modifying the catapult-like seige engine's projectile weight, launch angle, gravity, wind, counterweight mass and height. After each challenge, the ...more>>

  30. Triangle Formulas (Ask Dr. Math FAQ) - Math Forum
    Formulas for finding the area, perimeter, etc. of an equilateral, isosceles, right, or scalene triangle. ...more>>

  31. Triangles and Pyramids: Playing Math! - Hollis Easter
    A "teachable" on the construction of free-standing pyramids made "by folding a single piece of paper, with only a single piece of tape to hold them together...." This blog post goes on to include photos of a net, diagrams, and "things to investigate": ...more>>

  32. Triangle with one 90-degree Angle - NASA Lewis Learning Technologies Project
    A triangle with one 90 degree angle is always: an equilateral triangle; an acute triangle; an obtuse triangle; or, a right triangle? A detailed answer is provided. From NASA's 9th Grade Math Proficiency Test. ...more>>

  33. Tribute to Invariance - Cut the Knot!, Alexander Bogomolny
    As a competitive activity, the Squares and Circles game is not very challenging in itself. That is to say, the outcome of the game does not depend on how the game proceeds. The challenge is to come up with this realization and establish its veracity. ...more>>

  34. Tricks for Learning Math - Math Forum, Teacher2Teacher FAQ
    Answers to a frequently asked question: What are some math tricks and mnemonic devices I can use with my students? ...more>>

  35. Tricky Crossings - Ivars Peterson (MathLand)
    Have you heard the one about an itinerant entertainer traveling with a wolf, a goat, and a basket of cabbages? The showman comes to a river and finds a small boat that holds only himself and one passenger. For obvious reasons, he can't leave the wolf ...more>>

  36. Tricky Dice - Ivars Peterson (MathTrek)
    The game involves four specially numbered dice. You let your opponent pick any one of the four dice. You choose one of the remaining three dice. Each player tosses his or her die, and the higher number wins the throw. Amazingly, in a game involving 10 ...more>>

  37. Tricky Tables (MatheMUSEments!) - Ivars Peterson (Math Muse for Kids)
    The shape of a billiard table has a lot to do with the types of shots you can make in a game of billiards. Which of the odd tables pictured do you think would be your best bet for hitting another ball? Suppose you have a circular table, or a rectangular ...more>>

  38. Trigonometric Identities - David Manura
    Table of Common Angles, Law of Sines, Law of Cosines, and more. ...more>>

  39. Trigonometry (Manipula Math) - International Educational Software (IES Inc.)
    More than 20 Java applets designed to demonstrate principles of trigonometry, including sine, cosine, and tangent function boxes; graph of y=sin x, y=cos x, y=sin ax, y=A sin (Bx+C), and y=sin x + cos x; Fourier series; sin t = a; cos t=a; sin(A+B); ...more>>

  40. Trigonometry Reference Sheets (S.M.A.R.T.) - Math Share Shop
    Basic curves. By students at Theodore Roosevelt H.S., Bronx, & Edward R. Murrow High School, Brooklyn. ...more>>

  41. Trigonometry (S.O.S. Mathematics) - Dept. of Mathematical Sciences, Univ. of Texas at El Paso
    An online course: learning units presented in worksheet format review the most important results, techniques and formulas in college and pre-college trigonometry. Trigonometry: Angle Measures, Trigonometric Functions (magic identity, Addition Formulas, ...more>>

  42. Trigonometry Table - Industrial Press
    Tables that give corresponding sine, cosine, tangent, secant, cosecant, and cotangent values for angles 0 to 90 degrees. ...more>>

  43. Trimathlon
    Site centered around a book featuring activities from number theory and geometry beyond the realm of the typical school curriculum. The site features a discussion forum, a sample online game (with others promised), and a periodic puzzler with hint. ...more>>

  44. TriMathlon: A Workout Beyond the School Curriculum - A. K. Peters, Ltd.
    Companion site to the book TriMathlon: A Workout Beyond the School Curriculum, by Judith and Paul Sally. Discuss math, the book, or the site with members of the Trimathlon community; explore the current "Periodic Puzzler"; or play one of the Shockwave ...more>>

  45. Trisecting an Angle - MacTutor Math History Archives
    Linked essay tracing the history of the classical Greek problem of trisecting an arbitrary angle using for the construction only ruler and compass (which is impossible) - but, failing that, finding some other method. ...more>>

  46. Trisection Of An Angle - Jim Loy
    A discussion of what can and can't be constructed using compasses (for drawing circles and arcs, and duplicating lengths) and straight-edge (without marks on it, for drawing straight line segments). ...more>>

  47. Triumph of the Nerds: A History of the Computer - Robert X. Cringely; PBS Online
    A companion Web site for the Public Broadcasting System television special hosted by Robert Cringely, "Triumph of the Nerds: The Rise of Accidental Empires." Learn how youthful amateurs, hippies, and self-proclaimed "nerds" accidentally changed the world. ...more>>

  48. Trouble with Wild-Card Poker - Ivars Peterson (MathLand)
    Poker originated in the Louisiana territory around the year 1800. Ever since, this addictive card game has occupied the time and teased the minds of generations of gamblers. It has also attracted the attention of mathematicians and statisticians. The ...more>>

  49. Truel in the Sun - Ivars Peterson (MathTrek)
    Brilliant sunshine bakes a huddled row of ramshackle, weather-beaten buildings lining a dusty thoroughfare. Two gunfighters slam out of a decrepit saloon and stalk toward their posts at either end of the street. Facing each other, they prepare to draw ...more>>

  50. The Truth Tree's Math and Logic Board - Bob Scott, Ron Savori
    A collection of math and logic problems, from Pascal's Pizza Parlor and Leaning Ladders to The Old Lady and the Eggs and The Rickety Table Disaster. Register to solve these and other problems and compete with other visitors to The Truth Tree. ...more>>


 
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