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  All Sites - 6833 items found, showing 4851 to 4900

  1. Phi: That Golden Number - Mark Freitag, Univ. of Georgia
    Phi can be found in many geometric shapes as an approximation of the Golden Ratio. A geometric figure commonly associated with Phi is the Golden Rectangle, which has sides A and B that are in proportion to the Golden Ratio. It has been said that the Golden ...more>>

  2. Photographic Polyhedron (Geometry and the Imagination) - Conway, Doyle, Gilman, Thurston; The Geometry Center
    As you stand in one place and look around, up, and down, there is a sphere's worth of directions you can look. One way to record what you see would be to construct a big sphere, with the image painted on the inside surface. To see the world as viewed ...more>>

  3. Photos by Paul Halmos - Mathematical Association of America (MAA)
    Snapshots taken by Paul R. Halmos of notable contemporaries, academics, and other intellectuals of the 20th century. Search or browse the tagged collection of pictures, each of which includes a brief note about the subjects photographed in Halmos' own ...more>>

  4. Phyllotaxis - Pau Atela, Chris Golé; Smith College
    An interactive site for the mathematical study of plant pattern formation. Sections of the site include: Introduction to Phyllotaxis (classification, Fibonacci/golden angle, microscope, mathematical model, and lattices); history; glossary; references; ...more>>

  5. The Physics Classroom - Tom Henderson, hosted by StudyWorks! Online
    A physics tutorial for high school students, including explanations, animations, quizzes, and practice problems. ...more>>

  6. Physics Forums
    Discussions emphasize physics, but "PF" also includes an entire directory on mathematics: General Math; Calculus & Analysis; Differential Equations; Linear & Abstract Algebra; Topology & Geometry; Set Theory, Logic, Probability, and Statistics; ...more>>

  7. Physics (MathPages) - Kevin Brown
    More than 60 "informal notes" by Kevin Brown on mathematical physics: Doppler for sound and light, optical rays in heterogeneous media, radial orbitgs in Schwarzschild geometry, the formation and growth of black holes, can Schrodinger's cat factor numbers?, ...more>>

  8. The Physics of Baseball - Alan Nathan
    Read about the benefits (or not) of corked bats, the differences between aluminum and wood bats, the issues involved with characterizing the performance of bats from a physics point of view, and a description of the collision between a wooden bat and ...more>>

  9. Physics Simulation in Java - Erik Neumann
    Physics simulations, including springs and masses (various configurations), pendulums (single, double, chaotic), and roller coasters. You can move objects or change parameters like gravity, friction, etc. ...more>>

  10. Physics ToolChest: Vector Algebra Tools - ToolChest Software, Inc.
    Multimedia educational software in physics and mathematics. Advanced calculators and study aids for high school and college students. ...more>>

  11. Pi = 3.14159... - Math Forum, Ask Dr. Math FAQ
    What is Pi? Who first used Pi? How do you find it? How many digits is it? ...more>>

  12. Pi Across America - University of Phoenix
    Join the "Pi Pilot" for a "journey to one of humankind's most intriguing and celebrated numbers." Activities include "The Great Chain of Pi," "Taking Pi to Court," "Your Place in Pi," "Freehand Circle Drawing Competition," "Pi Party," and "Pi Bee." Scenario ...more>>

  13. Pi and Square Roots - Don Cohen (The Mathman)
    Kohler (a 5th-grader) follows Archimedes. A graph and a program for iterating the square root of 10. Sample problems with some answers from Chapter 10 of Don Cohen's worksheet book. ...more>>

  14. Pi and the Fibonacci Numbers - Ron Knott
    Contents: How Pi is calculated (Measuring the steepness of a hill; The tangent of an angle; The arctan function; Gregory's Formula for arctan(t); Radian measure; Gregory's series and pi; Using Gregory's Series to calculate pi; Machin's Formula; Another ...more>>

  15. Pi Approximation Day Greeting Cards - 123Greetings
    123Greetings - Send Free Electronic Greeting Cards to Friends and Families all over the World. There are no images available for Pi Approximation Day, but backgrounds and a variety of slogans are available, and you can write your own. ...more>>

  16. Pi: A Source Book - J. Borwein, Springer-Verlag
    A complete history of pi, with resources for teachers for anything from special topic courses to individual talks and special student projects. The literature on pi included in this source book falls into three classes: a selection of the mathematical ...more>>

  17. Pick a Digit, Any Digit - Ivars Peterson (MathTrek)
    One of the most amazing mathematical results of the last few years was the discovery of a surprisingly simple formula for computing digits of the number pi. Unlike previously known methods, this one allows you to calculate isolated digits - without computing ...more>>

  18. Pick a number from 1 to 10 ... for SCIENCE! - Alec Perkins
    "When asked 'pick a number from 1 to 10,' people tend to pick certain numbers more than others, in particular 7 and 4 over the extremes...." Participate by choosing your own number; see bar graphs and line plots of data submitted thus far according to ...more>>

  19. Picking Winners - Ivars Peterson (MathTrek)
    One of the attractive features of spectator sports is the uncertainty of the outcome. Even when one team is overwhelmingly favored to win, the underdog may still come through with a surprising victory. Nonetheless, the ability to pick winners can be of ...more>>

  20. Pick's Theorem - Cut the Knot!, Alexander Bogomolny
    A description with proof of Pick's theorem, including links to further pages including exercises with an applet for the geoboard, Farey Series, and Stern-Brocot Tree. An interactive column for MAA Online that uses a Java applet to simulate a puzzle or ...more>>

  21. Pi Digit Pendants - Cliff Spielman
    The first 3,456 digits of the decimal expansion of pi — microscopically printed on a silver-plated, 15mm square. Fibonacci, prime number, and other variations available from Spielman's MicroPendants site. Jewelry available as a free-standing pendant, ...more>>

  22. The Pi-Dye T-Shirt Shop - Josh Cummings
    Purchase from a variety of pi and other math t-shirts, mugs, clocks, etc., including the famous MathSpeak t-shirt. ...more>>

  23. Pieces 'n Creases: A Fun Guide to Origami - Herring, Long, Haeggquist, Jeremy; ThinkQuest Junior
    Contents include the history of origami; uses and benefits; terms, symbols, and tips; origami and peace; poems about origami; activities, and resources for folding paper. An award-winning entry from Vidor Middle School. ...more>>

  24. Piecewise Functions - Math Forum, Ask Dr. Math Common Question
    A selection of answers to questions about piecewise functions, such as how to graph them and how to determine the values of parameters that make a particular piecewise function continuous and differentiable. ...more>>

  25. Pi is Irrational - Malek
    A mathematical argument for the irrationality of Pi, from Malek's Mathlinks (Mathematics on the Internet). ...more>>

  26. Pi - Jim Loy
    An elementary introduction to pi. ...more>>

  27. PiNation.com - Hugh Bell
    A site to "... just enjoy pi. Leave the math aside. Don't even think about the circumference of a circle." Create unique representations of the decimal expansion of pi with the Pi-Art Tool: choose the color for each digit, the number of decimal places, ...more>>

  28. Pinpointing Prey - Ivars Peterson (MathTrek)
    The sand scorpion uses two types of sensors on the tips of its legs to detect mechanical vibrations transmitted over relatively short distances across the surface. One sensor, called the basitarsal slit sensillum, detects surface waves, or ripples. The ...more>>

  29. The Pi Page - Roy Williams
    A mere 50000 Digits of the Famous Transcendental; A program to compute it; Some Arctangent Formulae for computing it; Some little-known quaint numerical facts; and the most useless formula for computing pi. Also links to other pi pages. ...more>>

  30. The Pi Pages - Centre for Experimental and Constructive Mathematics (CECM)
    "Pi is one of the few concepts in mathematics whose mention evokes a response of recognition and interest in those not concerned professionally with the subject. It has been a part of human culture and the educated imagination for more than twenty five ...more>>

  31. Pi-Search
    Search the first four billion binary digits of Pi for a string. Enter the string in hex (4 bit) or character (5 bit) format. Includes some statistics (probability of occurrence of characters, digits). Related links include articles and papers. ...more>>

  32. The Pi-Search Page - Dave Andersen
    Search the first 50 million digits of pi for any numeric string up to 120 digits. The page also documents a few observations about pi's numeric strings, including self-locating strings, palindromes, and month-day combinations. ...more>>

  33. The Pi Song - Hester Lewellen
    Pi Song audio and sheet music. This musical scale is aligned to the digits of pi. ...more>>

  34. PI Team Chess Game
    A multiple player chess game. PI Team Chess builds strong problem solving, critical thinking, math and teamwork skills. Site includes chess lesson plans, scholastic research on chess, and problem solving activities. ...more>>

  35. Pitfalls of Data Analysis - Clay Helberg
    Subtitled "... or How to Avoid Lies and Damned Lies," this paper discusses what people "often overlook in their data analysis, and ways people sometimes 'bend the rules' of statistics to support their viewpoint." Tips to ensure the clarity and accuracy ...more>>

  36. Pi Through the Ages - MacTutor Math History Archives
    A history of pi: the Rhind papyrus (Egypt), Ptolemy, Tsu Ch'ung Chi, al'Khwarizmi, Al'Kashi, Viet, Romanus, Van Ceulen, Gregory, Shanks, Lambert, Euler, Buffon, and many more, with other Web sites and 30 references (books/articles). ...more>>

  37. The Pi Trivia Game - Eve A. Andersson
    Test your knowledge of history, mathematics, and even a little physics. Here are 25 (given to you 5 at a time) pi-related questions, picked randomly from a pi question database. Also at http://cid.com/~eveander/trivia/. ...more>>

  38. The Pixel Calculator - METIP (Mathematics Experiences Through Image Processing) Project
    The Pixel Calculator is intended primarily for use by students of ages 12-17 in a variety of enrichment activities involving mathematics and digital image processing. It provides a good introduction for students to digital images by allowing students ...more>>

  39. PJ's Mathematical Gold Nuggets - Pam Strout; Bethel High School, Bethel, Connecticut
    Links relating to K-12 research topics in mathematics and mathematics teaching collected and usefully annotated by a mathematics teacher. ...more>>

  40. Place Value - Cut the Knot!, Alexander Bogomolny
    Dictionary definitions of place value and what they lack; the emphasis on place value in the NCTM Standards; its importance in understanding our numeration system; how it arises from one of several possible representations of grouping in the counting ...more>>

  41. Planar Geometry (The Geometry Junkyard) - David Eppstein, Theory Group, ICS, UC Irvine
    An extensive annotated list of links to material on planar geometry. ...more>>

  42. Planarity Flash Game - John Tantalo
    Arrange the vertices such that no edges overlap. Solve graphs of increasing difficulty, accumulating points based on the number of moves and the time it took to make them. ...more>>

  43. Plane Geometry Web Pages - David Jaffe
    Materials from a geometry course originally taught to future middle and high school teachers. Using definitions, theorems, proofs, and examples, the site introduces mappings; isometries and similarities; angles and trigonometry; congruence and similarity; ...more>>

  44. Plane Graphic Calculator - J. E. Lillge
    A Java calculator that can plot graphs of mathematical functions. Intended primarily as an educational aid to understanding the geometric interpretation of mathematical functions, it also supports complex numbers, vectors, and parametrically defined functions. ...more>>

  45. Plane Isometries - Interactive Mathematics Miscellany and Puzzles, Alexander Bogomolny
    A collection of basic facts and partial explanations on plane isometries. With accompanying Java applets for translation, reflection, rotation and glide reflection. ...more>>

  46. Plane Patterns - Ivars Peterson (MathTrek)
    Exploring the link between mathematical symmetry and artistic effort. One- and two-dimensional repeating patterns appear ubiquitously on surfaces, from quilts and colored fabrics to pottery and ceramic tiles... Analyzing the symmetries that underlie such ...more>>

  47. Planes of Budapest - Ivars Peterson (MathTrek)
    Nearly every Sunday during the winter of 1933 in Budapest, a small group of students would meet somewhere in the city at a park or cafe to discuss mathematics. The gathering typically included Paul Erdös (1913-1996), György (George) Szekeres, ...more>>

  48. Planet Math
    Designed to be a central repository for mathematical knowledge on the web, with a pedagogical slant. All content is user-contributed, either to the Encyclopedia or to the reviewed listings of papers, books, and lecture notes. Polls, discussions, and feedback ...more>>

  49. PlanetMath.Org Article Browser - martin.czygan
    All articles from PlanetMath.org ordered by pagerank--an attempt to sort math topics by importance (according to the pagerank algorithm). Incoming and outgoing links for an article are shown in an unobtrusive user interface. ...more>>

  50. Planet Perplex - Stefan Van den Bergh
    Collection of optical illusions, impossible objects, visual puzzles, and hidden images. ...more>>


 
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