Drexel dragonThe Math ForumDonate to the Math Forum

The Math Forum Internet Mathematics Library

Browse and Search the Library
Home : Levels : High

_____________________________________
Library Home || Search || Full Table of Contents || Suggest a Link || Library Help
_____________________________________


  All Sites - 6832 items found, showing 5201 to 5250

  1. Puzzles of Leonid Mochalov - Leonid Mochalov
    Numerical and visual puzzles, some in Russian only, most in English. ...more>>

  2. Puzzles/One-player Games - Jürg Nievergelt
    Rubik's Cube and its variants. The 3*3*3* cube; Rubik's Revenge (4*4*4 cube); Pyramix (tetrahedron); Rubik's Clock; Rubik's Magic. Also Cryptequations, polyominoes, and links to a list of similar puzzles. ...more>>

  3. Puzzles, & Riddles - The Contest Center - Frank Rubin
    Hundreds of puzzles and mathematical problems ranging from kindergarten through post-doctoral levels. For the easier puzzles, answers are provided on the site; names of those who submit correct solutions to harder problems are posted. See also Puzzles ...more>>

  4. Puzzle Toons, The Citizen Scientist - Brian Mansfield
    A comic strip devoted to puzzles, mind benders, and brain teasers. The subject matter of the puzzles ranges from mechanical devices and geometry to astrodynamics, chess, and billiards. Read back issues of Mansfield's column, dating to its inception in ...more>>

  5. Puzzle University - Amy Galitzer
    A non-accredited "university," created solely for fun. Everything is free to play and take part in. Register, pass a simple test, and advance from freshman to sophomore to junior to senior to grad student this way. The puzzles get harder as you progress. ...more>>

  6. Puzzle Up - Binary Arts Corporation
    A collection of others' Java puzzles, baffler and logic questions, "for serious puzzlers," best of the week, and mazes and mysteries, each organized into the three different skill levels of young, brisk, and expert. Also, information on the company's ...more>>

  7. PuzzleUp - Emrehan Halici
    New problems and games posted every week in a contest format. Register, read the competition's rules, and browse the archive of past problems. ...more>>

  8. Puzzle Workshop - maths online - University of Vienna, Austria
    Make your own interactive "jigsaw," or multiple choice puzzles, to save and run on your own computer or to publish on the web. The Applet puzzle creation page requires Java; the Test puzzle creation page allows greater use of mathematical symbols. ...more>>

  9. Puzzle World - John Rausch
    A searchable site with information and a discussion group (Puzzle Talk) about handcrafted mechanical puzzles. Most of the puzzles presented here are not the mass-produced variety found in stores, but limited production puzzles produced by craftsmen (often ...more>>

  10. Puzzle Zapper - Alexandre Owen Muñiz
    Original mathematical puzzles, some available in lasercut acrylic for sale: polyomino common superforms, pentomino coloring problems, miscellaneous polyomino explorations, flexible polyforms, square grid puzzles, visualizing sequences of numbers, Lissajous ...more>>

  11. Puzzlies.net - Michał Barciś
    Play sudoku and griddler logic puzzles online. Log in to save game play and compete in the rankings. ...more>>

  12. Puzzling Lines - Ivars Peterson (MathTrek)
    Sol LeWitt has often featured geometric and combinatorial themes in his sculptures, paintings, and drawings. In 1973 he composed "Straight Lines in Four Directions and All Their Possible Combinations," a grid of 15 squares, each inscribed with one or ...more>>

  13. Puzzling Primes - Isaac Reed
    To fully comprehend our number system, mathematicians need to understand the properties of the prime numbers - but even finding them isn't so easy. ...more>>

  14. The Puzzling World of Barry R. Clarke - Barry R. Clarke
    Brain teasers from Clarke's column in The Daily Telegraph (UK) and from his various puzzle books: liar problems, logic teasers, number conundrums, matchstick puzzles, lateral mind-benders, and more. With links to other puzzles sites and an article on ...more>>

  15. PyGeo - Arthur Siegel
    A dynamic geometry toolset written in Python, with dependencies on Python's Numeric and VPython extensions. It defines a set of geometric primitives in 3d space and allows for the construction of geometric models that can be manipulated interactively, ...more>>

  16. Pyramid and Frustum Formulas (Ask Dr. Math FAQ) - Math Forum
    Formulas for finding the surface area and volume of a pyramid and its frustum. ...more>>

  17. Pyramids and Algebra - David C. Miller
    Four questions that explore the problem of creating a pyramid from a set of dominoes, dealing with the concepts of arithmetic series; derivation of square roots including a graphical method; scientific notation; exponential notation; quadratic equations; ...more>>

  18. Pythagoras' Haven - Jim Morey
    Step through a geometrical Java applet proof of the Pythagoraean theorem - the square of the hypotenuse of a right triangle is equal to the sum of the squares of the other two sides. ...more>>

  19. Pythagoras: Music and Space - J. Boyd-Brent
    A brief introduction to Pythagoras' observations on the relation between music and number. Graphics show music intervals expressed as mathematical ratios. Pythagoras observed that when the blacksmith struck his anvil, different notes were produced according ...more>>

  20. Pythagoras Plays Ball - Ivars Peterson (MathLand)
    Spring, baseball, statistics, math. In many ways, baseball is a numbers game: Strikeouts, home runs, batting averages, innings pitched, complete games, earned run averages, number of players left on base in scoring position in the bottom of the ninth ...more>>

  21. Pythagoras' Theorem: Elaboration on the Similarity Argument - Interactive Mathematics Miscellany and Puzzles, Alexander Bogomolny
    Euclid included two proofs of the Pythagorean theorem in his Elements. A better known Proposition I.47 (Bride's chair) and VI.31 which is consistently overlooked in the introductory geometry courses. The latter, however, renders the theorem virtually ...more>>

  22. Pythagoras' Theorem in Babylonian Mathematics - MacTutor Math History Archives
    Linked essay examining four Babylonian tablets that all have some connection with the Pythagorean theorem. With references and other related web sites. ...more>>

  23. Pythagorean Puzzle (SMILE) - Earl Zwicker, Illinois Institute of Technology
    A lesson that models the phenomenological approach to enable students to prove the Pythagorean Theorem on their own using puzzle pieces and working together. From the Geometry and Measurement and Algebra and Trigonometry sections of a collection of almost ...more>>

  24. The Pythagorean Theorem and the Maya Long Count - Charles Wm. Johnson; Science in Ancient Artwork -
    Various essays dealing with the possible extension of the Pythagorean Theorem to the third power in relation to the mathematical and geometrical appearance of the Maya long count fractals within progressive series of right triangles. It would appear that ...more>>

  25. Pythagorean Theorem Animated Voice Demo - Chris Beall
    Animted deerivation of the Pythagorean Theorem. ...more>>

  26. Pythagorean Theorem - Bellevue Community College
    A brief illustrated page describing the theorem, with a little historical background and a proof. ...more>>

  27. Pythagorean Theorem - Greg Huberty, Univ. of Georgia
    President James Garfield is credited with a proof of the Pythagorean theorem unlike other proofs in that it does not use squares of the sides; rather, it uses two triangles of sides a, b, and c along with a triangle with legs of c to create a trapezoid. ...more>>

  28. The Pythagorean Theorem - Jim Loy
    A proof of the theorem, courtesy Legendre, and other proofs and miscellaneous information. ...more>>

  29. Pythagorean Theorem (Manipula Math) - International Education Software (IES)
    Java applets for experimenting with shifting, rotating, and moving pieces of quadrilaterals to prove the Pythagorean Theorem. ...more>>

  30. The Pythagorean Theorem - Math Forum, Ask Dr. Math FAQ
    What is the Pythagorean theorem? When would you use it? How can we prove it? ...more>>

  31. The Pythagorean Theorem (MSTE) - J. T. Johns; University of Illinois at Urbana-Champaign (UIUC)
    Developing the Chinese proof of the Pythagorean theorem using the Geometer's Sketchpad. Students, each using a computer, are led through it by the worksheet supplied. ...more>>

  32. Pythagorean Theorem - Over 20 Proofs - Interactive Mathematics Miscellany and Puzzles, Alexander Bogomolny
    A general exposition of the Pythagorean theorem, with proofs from Euclid to Garfield - and more. Also links to other sites on the Web with proofs. ...more>>

  33. Pythagorean Theorem Proofs - Math Forum, Ask Dr. Math Common Question
    A selection of answers to questions about proofs of the Pythagorean Theorem, such as "Do you know the exact number of proofs of the Pythagorean Theorem in existence?" and "Why doesn't the Pythagorean theorem work for triangles other than right triangles?" ...more>>

  34. Pythagorean Theorem - Warren F. Davis, Davis Associates, Inc.
    An animated, non-mathematical, annotated proof of the Pythagorean Theorem, assumed to be the method of proof actually used by Pythagoras circa 550 BCE (see the Bronowski reference). ...more>>

  35. Pythagorean Triples - Math Forum, Ask Dr. Math FAQ
    What is a Pythagorean triple? What do Pythagorean triples have to do with Fermat's Last Theorem? ...more>>

  36. Pythia Equation Solver - Pablo Perna
    The site contains equations for which the user can solve automatically any unknown given the known parameters. Geometry equations include areas of triangles and circles, and surface area and volume for various 3D shapes. Equations also include electronics ...more>>

  37. QAMA - QAMA, LLC
    "The calculator that thinks only if you think, too," QAMA requires the operator to first enter a reasonable estimate. QAMA encourages rounding and rapid back-of-the-envelope reckoning, but does not tolerate errors of magnitude or sign, or of basic operations ...more>>

  38. Q-Puzzle - XIAO Gang
    A mathematical jigsaw puzzle: your goal is to recover a disordered photo by finding the inverse affine transformation. A French version is also available. ...more>>

  39. Quadralay's Cryptography Archive - Quadralay Corporation
    Encryption standards, frequently asked questions (FAQs), and newsgroups. Clipper, Digital Telephony, History of Cryptology, Internet Security, Kerberos, PGP, RIPEM, and a glossary. ...more>>

  40. Quadratic, Cubic, and Quartic Equations - MacTutor Math History Archives
    Linked article describing the progress made on these equations from the Babylonians through Leibniz in 1673, with another Web site and 12 references. ...more>>

  41. Quadratic Equations - Math Forum, Ask Dr. Math Common Question
    A selection of answers to questions about quadratic equations, such as "When would you solve a quadratic equation in real life?" and "Why FOIL?" ...more>>

  42. Quadratic Formula - Jim Loy
    The normal derivation of the quadratic formula (completing the square), and another using a pair of factors, finding all possible factors with whole numbered terms... ...more>>

  43. The Quadray Papers - Kirby Urner, 4D Solutions
    An Introduction to Quadrays. The game of quadrays starts with a regular tetrahedron and four rays pointing from its center to the four corners; these or any ray built from these rays are labelled 4-tuples - i.e. four numbers separated by commas and enclosed ...more>>

  44. Quadrilateral Classification - Math Forum, Ask Dr. Math Common Question
    A selection of answers to questions about how to classify quadrilaterals, such as "Are squares rectangles? Are rectangles squares? ...more>>

  45. Quadrilateral Formulas (Ask Dr. Math FAQ) - Math Forum
    Formulas for finding the area, perimeter, etc. of a quadrilateral: square, rectangle, parallelogram, rhombus, trapezoid, trapezium, kite, and cyclic quadrilateral. ...more>>

  46. Quandaries and Queries (Math Central) - Dept. of Mathematics and Statistics, University of Regina, Saskatchewan, Canada
    A math Question and Answer area for K-12 students and teachers, with searchable archives of past questions and answers. ...more>>

  47. The Quantile Framework for Mathematics - MetaMetrics, Inc.
    The Quantile Framework measures a student's mathematical achievement and concept/application solvability on the same scale, enabling educators to use Quantile measures to monitor a student's development in math and forecast performance on end-of-year ...more>>

  48. Quantitative and Qualitative Research Supporting Prentice Hall Mathematics Programs - Pearson Education, Inc.
    Download PDFs: the Research Summary of Prentice Hall Mathematics programs; Quantitative Research on 1999 Course 1, Algebra LVR, 2000 Pre-Algebra Research Summary, and 1999 Middle School Math; Qualitative Research on Unique Progress and on Reading and ...more>>

  49. The Quantum Age Begins - MacTutor Math History Archives
    Linked essay describing the beginnings of quantum theory, from Kirchoff's blackbody radiation work in 1859 to Bohr, Einstein, and von Neumann in the 1930's, with 33 references (books/articles). ...more>>

  50. The Quantum CyberTeaser - National Science Teachers Association (NSTA)
    Archive of bimonthly problems posed online by Quantum, the math and science magazine. The magazine ceased publication with its July/August 2001 issue. Puzzles and most solutions are still available here. ...more>>


 
Page: [<<first] [<prev] 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 [next>] [last>>]


Search for these keywords:
               

Click only once for faster results:

all keywords, in any order at least one, that exact phrase
parts of words whole words


Power Search

[Privacy Policy] [Terms of Use]

_____________________________________
Home || The Math Library || Quick Reference || Search || Help
_____________________________________

© 1994-2014 Drexel University. All rights reserved.
http://mathforum.org/
The Math Forum is a research and educational enterprise of the Goodwin College of Professional Studies.The Math Forum is a research and educational enterprise of the Drexel University School of Education.