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  All Sites - 6865 items found, showing 6351 to 6400

  1. Triangles in Elliptic Geometry - Thomas Banchoff, The Geometry Center
    An examination of some properties of triangles in elliptic geometry, which for this purpose are equivalent to geometry on a hemisphere. The aim is to construct a quadrilateral with two right angles having area equal to that of a given spherical triangle. ...more>>

  2. 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>>

  3. Triangular Numbers
    Triangular and square numbers, presented with numeric, algebraic, and geometric illustrations, proofs, and formulas. ...more>>

  4. triangular prism - Manjit Singh Atwal
    Download lessons and worksheets about triangular prisms, including finding surface areas and volumes. ...more>>

  5. Triangulation (SMILE) - Ann M. W. Brandon, Oak Forest High School
    A lesson designed to teach students the basics of how to perform and calculate triangulation. From the Practical and Applied Math section of a collection of almost 200 single concept lessons by the Science and Mathematics Initiative for Learning Enhancement. ...more>>

  6. 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>>

  7. Tricki - Gowers, Timothy; Sisask, Olof; and Frolkin, Alex
    A wiki "repository of mathematical know-how" that encompasses techniques ranging from the very general to those that concern particular subareas of mathematics. Browse problem-solving ideas by technique: for finding algorithms and algorithmic proofs, ...more>>

  8. 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>>

  9. 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>>

  10. 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>>

  11. 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>>

  12. Trig According to Euclid - Len Smiley, Deborah Smiley
    Four figures proving trigonometric addition and subtraction formulas for cosine and sine. Free of Cartesian coordinates, the proofs are synthetic and use a common, minimal diagram from Euclidean geometry. ...more>>

  13. Trigonometric Functions and Calculus - Waner, Costenoble; Hofstra University
    A text on the WWW for liberal arts and business majors. Contents (each with exercises): Modeling with the Sine Function; The Six Trigonometric Functions; Derivatives of Trigonometric Functions; Integrals of Trigonometric Functions. ...more>>

  14. Trigonometric Functions - Larry Gladney, Dept. of Physics, Univ. of Pennsylvania
    From the Interactive Textbook of PFP 96. A review of the trigonometric functions, sine, cosine, and tangent, as the most frequently used functions seen in introductory physics. ...more>>

  15. The Trigonometric Functions - MacTutor Math History Archives
    Linked essay sketching trigonometry from its beginnings out of the early correspondence between astronomy and mathematics through the 18th century, with 17 references (books/articles). ...more>>

  16. Trigonometric Functions (SMILE) - Lesia Smith, Michael M. Byrne School
    A lesson designed to teach students to define and demonstrate the six trigonometric functions; and to facilitate using the three most frequently used trigonometric functions. From the Algebra and Trigonometry section of a collection of almost 200 single ...more>>

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

  18. Trigonometry and Calculus Problem of the Week - Math Forum
    Trigonometry and calculus problems from a variety of sources, including textbooks, math contests, NCTM books, puzzle books, and real-life situations, designed to reflect different levels of difficulty. From 1998 until 2002, the goal was to challenge students ...more>>

  19. Trigonometry Challenge - ETCAI Products
    A program designed to supplement your classroom and textbook instruction in numerical trigonometry. A trial program is available for download. The generic topics can be used with most textbooks. For Windows 95/98/98SE/me/XP/2000/NT4. ...more>>

  20. Trigonometry Formulas - Math Forum; Ask Dr. Math FAQ
    Formulas for trig functions, bounds, identities, solving right and oblique triangles and inverse trig functions. ...more>>

  21. 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>>

  22. 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>>

  23. Trigonometry (Seeing is Believing) - De Silva, D'Andreti; ThinkQuest 1997
    A trigonometry tutorial, comprising: angles; trigonometric functions; oblique triangles; vectors; polar cordinates; complex numbers; and hyperbolic functions. ...more>>

  24. 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>>

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

  26. Trigonometry - Technical Tutoring
    Site provides an introduction to trigonometry, includes illustrative examples and exercises in basic trigonometry as well as a summary of the important basic trig identities and formulae. ...more>>

  27. Trioker - Triominoes Puzzle - J. Marc Genevey
    Le jeu de Trioker a été inventé par Monsieur Odier et étudié par lui-même et son compère Mr Roussel dans leur ouvrage Surprenant Triangles. Il est composé de l'ensemble des 24 pièces triangulaires ...more>>

  28. Trisecting a Line Segment - Robert Styer
    Several ways to trisect a line segment using compass and straightedge. ...more>>

  29. 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>>

  30. Trisecting the Angle - Steven Dutch; University of Wisconsin - Green Bay
    Why is trisecting an angle with a straightedge and compass impossible? Discussion includes several other proofs of impossibility (the largest prime number, the square root of 2, repeating patterns in the plane) and some alternate methods of trisection ...more>>

  31. 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>>

  32. 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>>

  33. Troublesome Weather Trends - Ivars Peterson (MathTrek)
    In the February Bulletin of the American Meteorological Society, Statistician Kevin J. Coakley of the National Institute of Standards and Technology in Boulder, Colo. argues that ... daily temperatures donít vary randomly. They generally tend to rise ...more>>

  34. 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>>

  35. 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>>

  36. Truncated Octahedron Blocks - Hop David
    A discussion of a three-dimensional tessellation that may make a good bridge between the rectangular solid tessellation and the octa/tetrahedral tessellation. ...more>>

  37. 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>>

  38. TSM-4: 'Using the Internet for Mathematics' - Oundle School, Peterborough, UK
    A one-day conference for teachers held 11 May 1998 at Oundle School, Peterborough, UK. Technology for Secondary and College Mathematics (TSM) is a teacher training initiative based at Oundle School. Online Workshops: "How to download text and images off ...more>>

  39. The Tunnel of Samos - Project MATHEMATICS!, California Institute of Technology
    A videotape-and-workbook module that explores a basic topic in high school mathematics in ways that cannot be done at the chalkboard or in a textbook. This video describes a remarkable engineering work of ancient times: excavating a one-kilometer tunnel ...more>>

  40. Turbo Tables Educational Software - AGoGoGadget
    Intended to teach multiplication techniques especially useful for products larger than 12x12. Includes teaching module, timed trial, and game for practicing your multiplication skills. Free demo available. Available for Windows XP and Pocket PC platforms. ...more>>

  41. TurkZeka - Yilmaz Ekici, TurkZeka.com
    Clever puzzles, posted regularly, with quarterly puzzle competitions open to all with free login. In Turkish, English, and Japanese. ...more>>

  42. Turn of the Screw - Ivars Peterson (MathTrek)
    Mathematician Chris Rorres of Drexel University in Philadelphia has taken a close look at Vitruvius's specifications for constructing an Archimedes screw... Recent years have seen a revival of interest in the Archimedes screw, particularly for its proven, ...more>>

  43. Turtle Tracks - Ivars Peterson (MathTrek)
    One way to describe a geometric figure is in terms of the path generated by a moving point. Using the computer language LOGO, children can produce a list of commands to govern the motion of a "turtle" and trace out a geometric track on the computer screen. ...more>>

  44. TutaPoint.com - TutaPoint.com
    Tutapoint.com provides online math, science, and language tutoring. Math subjects include basic math and high school topics. ...more>>

  45. Tutor Amigos - Tutor Amigos, LLC
    Also in Spanish. Live, online tutoring and homework help in Math and Science for Spanish-speaking students. Our goals are to provide Latinos and Hispanics with affordable, personalized instruction in Math and Science and to support those English Language ...more>>

  46. Tutor.com - Tutor.com, Inc.
    One-to-one real-time help from professional subject experts and librarians. Students looking for homework help may check if their local library or after-school center offers free tutor.com tutoring; try tutor.com personal online tutoring free for a week; ...more>>

  47. Tutor For Maths - Vikram Singh
    One-to-one math tutoring, consulting, brainstorming, and editing sessions conducted online while on the phone with WhizIQ electronic whiteboard software. ...more>>

  48. Tutorials for the Calculus Phobe - Mike Kelley
    Flash tutorials that explain calculus audio-visually. A work in progress, more are posted as they are completed. ...more>>

  49. Tutorials - Harvey Mudd College Department of Mathematics
    Primers for pre-calculus, single variable calculus, multi-variable calculus, linear algebra, and differential equations, each with proofs, examples, and key concepts highlighted, some with Mathematica plots to view in a new browser window: algebra review, ...more>>

  50. The Tutorials Search Engine
    Searchable listings of tutorials on a variety of subjects, including mathematics. ...more>>


 
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