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  All Sites - 5514 items found, showing 3951 to 4000

  1. PCS Edventures - PCS Edventures!.com, Inc.
    Education company with a product line ranging from hands-on learning labs in technology-rich subjects like engineering, science, math, robotics, IT, and electronics to administrative tools designed to help schools manage the enormous amounts of data required ...more>>

  2. Pédagogie Mathématiques - Académie de Rennes
    De nombreux documents pédagogiques (du collège au BTS), des jeux ainsi que d'excellents exemples d'utilisation des T.I.C.E. (technologies de l'information et de communication pour l'enseignement) des maths. ...more>>

  3. PDEase2D - Macsyma Inc.
    PDEase solves a range of nonlinear problems in heat transfer, solid mechanics, fluid mechanics, groundwater flow, electromagnetics, chemical reaction diffusion, and quantum mechanics. It simplifies finite element analysis with automatic gridding, automated ...more>>

  4. PDK Poster Project - Pamela Davis Kivelson
    "Using Visual Means to Challenge Stereotypes." Posters for scientific literacy, humanizing the image of research science and scientists, and increasing the number of women and girls who choose to pursue and maintain careers in the physical sciences and ...more>>

  5. Peanut Software for Windows - Rick Parris
    Abstracts and links for downloading free mathematics software: Wingeom (high-precision geometric constructions); Winplot (general-purpose plotting utility); Winstats (scatter plots, curve fitting, histograms, statistical data, and standard theoretical ...more>>

  6. PearlQuiz - Web Pearls Inc.
    A math quiz-authoring system in three parts: an application platform that manages databases and computational engines; a server of HTML and JSP pages; and an author application for writing, editing, and publishing quizzes. Question types include true/false, ...more>>

  7. Pedagogy Articles - Schiller
    Translations of papers by G.W. Leibniz on the catenary (or funicular curve) and by Gauss on the Fundamental Theorem of Algebra. ...more>>

  8. Peek: N-dimensional polytope visualization by cross-section and projection - Gordon Kindlmann
    A program to explore higher dimensional objects interactively through the use of cross-sections and projections. The goal is for the user to gain some intuition about higher-dimensional geometry. Projective views and 3-dimensional cross-sections of hypercubes. ...more>>

  9. Pell's equation - MacTutor Math History Archives
    Linked essay on the indeterminate quadratic equation. With references and other related web sites. ...more>>

  10. Pennies in a Tray - Ivars Peterson (MathLand)
    What's the largest number of pennies that you can pack inside a circular tray to form a carpet of nonoverlapping coins? What about inside a square or triangular tray? What if you could expand or contract the size of all your pennies to fit a required ...more>>

  11. Penn State University Mathematics Department
    Course home pages and instructional material; seminars, colloquia, and conferences; and subject area pages for Penn State research centers, with preprints and links to other resources on the Web: Algebra and Number Theory; Dynamical Systems; Mathematical ...more>>

  12. A Penny Surprise - Ivars Peterson (MathTrek)
    Flipping a coin in the air, catching it, then determining whether it has come up heads or tails is to many people a prototypical random process. In some sense, however, coin tossing isn't really random at all. A mechanical gadget can flip a properly positioned ...more>>

  13. The Penrose Puzzle Room - World of Escher
    Mathematically based Pentaplex Puzzles designed by Sir Roger Penrose, the well-known English mathematician. The original 45 piece Gamebirds, 190 piece Perplexing Poultry - 2 designs, 500 piece Jigsaw Puzzles - 4 designs. ...more>>

  14. Penrose Tiling Generator - Stephen Collins
    A software package for Windows NT, for generating rhombic Penrose tilings and investigating symmetrical topological chains within them. ...more>>

  15. Pens and Crystals (Math Chat) - Frank Morgan, MAA Online
    Answering the challenge: How should you fence in two adjacent rectangular pens of given areas A, B with the least amount of fencing (including the fencing separating them)? Ms. Mattuck's 8th graders at the Richmond School use the Geometer's Sketchpad ...more>>

  16. Pentagonal Geometry and the Golden Ratio (The Geometry Junkyard) - David Eppstein, Theory Group, ICS, UC Irvine
    An extensive annotated list of links to material on geometric problems defined on regular pentagons, involving pentagonal angles, or based on the golden ratio (the ratio of diagonal to side length in a regular pentagon). ...more>>

  17. The Pentagon Universe (Penrose tiles and more) - Kadon Enterprises, Inc.
    Manipulatives based on Penrose tiles, golden triangles and other tilings based on the golden ratio. ...more>>

  18. Pentium Bug Revisited - Ivars Peterson (MathLand)
    The incident that triggered a barrage of ridicule occurred in the fall of 1994, a few months after Intel had introduced its Pentium microprocessor. The furor started with an e-mail message from Thomas R. Nicely, a mathematician at Lynchburg College in ...more>>

  19. Pentomino Relationships - Adrian Smith
    The site describes how pentominoes (twelve pieces of wood, each a different shape and each made of five cubes) fit together into rectangles or cuboids, as well as the subsequent challenge of finding as many other solutions as possible from the one just ...more>>

  20. Perfect, Amicable and Sociable Numbers - David Moews
    Definitions, descriptions, and discussions of perfect, amicable, and sociable numbers; aliquot sequences, related problems, and other definitions of divisibility, with a short bibliography. ...more>>

  21. A Perfect Collaboration - Ivars Peterson (MathLand)
    Euclid and Euler seem an unlikely pairing. One was the most prominent mathematician of antiquity, best known for his treatise on geometry, the Elements. The other was the most prolific mathematician in history, the man whom his 18-century contemporaries ...more>>

  22. Perfection - Greg Lobanov
    This mobile game for iPhone and Android handheld devices presents convex and concave polygonal shapes for players to cut into the outlines indicated. Available directly from the iTunes app store and Google Play. ...more>>

  23. Perfect Numbers - MacTutor Math History Archives
    Linked essay describing the work on perfect numbers from Pythagoras through Euclid, Nicomachus, the Arabs, Cataldi, Descartes, Mersenne, Fermat, Euler, Barlow, Catalan, Cole, and others; with other web sites and 20 references (books/articles). ...more>>

  24. Perfect Symmetry Number Theory - Derek Nalls
    A fundamental, educational exposition of a nonstandard number theory based upon perfect symmetry (in contrast to broken symmetry) modelled throughout arithmetic, algebra, analytic geometry, analytic trigonometry and calculus. ...more>>

  25. Performance Evaluation - Keith Devlin (Devlin's Angle)
    "Dear Professor G,..." A critique of current professorial evaluation schemes in the college/university setting. ...more>>

  26. Perimeter Institute for Theoretical Physics
    An independent, non-profit, scientific research organization working to advance our understanding of physical laws and develop new ideas about the essence of space, time, matter, and information. Located in Waterloo, Ontario, Canada, Perimeter also provides ...more>>

  27. Periodic Points of Quadratic Polynomials - Cut the Knot!, Alexander Bogomolny
    The main purpose of the Mandelbrot set is to index Julia sets corresponding to various values of the parameter c... iterations inside M evolve differently depending on the value of c. (You may explore some iterations via the applet supplied.) An interactive ...more>>

  28. Permadi.com - F. Permadi
    Java and Flash applets: logic games, drawing and pattern-making programs, Conway's Life, and more arcade-style offerings. Also includes tutorials in using Flash and a graphics gallery. ...more>>

  29. The perplexing mathematics of presidential elections - Keith Devlin (Devlin's Angle)
    It's not the idea of one person one vote that's the problem, it's that math that is used to turn those votes into a final decision. Ideally, that math should reflect the wishes of the electorate. But does it? The answer usually comes as a surprise to ...more>>

  30. Personal Algebra Tutor (PAT) - CyberEd, Inc.
    An algebra problem solving program for high school and college algebra. Students can enter a wide variety of algebra problems and PAT will solve them step-by-step, with detailed explanations. PAT solves, simplifies, graphs, etc. Solutions with side-by-side ...more>>

  31. Personalized Programming Service Inc.
    Educational software for teachers and students. Topical software in Math, English, Social Studies, and Science, as well as Quizmaker and Testmaker programs. Download demos and upgrades, browse the products, or order on site. ...more>>

  32. Perspective Study - Hop David
    David suggests a mapping from half of 3-D space onto a plane, feeling that traditional perspective drawings are similar to the image projected by a pinhole camera. Perspective illustrations of arches, looking up or down at a skyscraper, peripheral vision, ...more>>

  33. PEST: Model-Independent Parameter Estimation - Watermark Computing
    PEST is a package that can be used with any pre-existing model for data interpretation or model calibration. Use of nonlinear parameter estimation techniques allows you to exercise greater control. The site includes PEST, Parallel PEST, SENSAN, PEST MODFLOW/MT3D ...more>>

  34. Pete Casazza
    Articles by this University of Missouri professor, some of them scanned from journals, include "A Mathematician's Survival Guide," "Classes of Finite Equal Norm Parseval Frames," "Dear Pythagoras: See What You Started," "Equivalents of the Kadison-Singer ...more>>

  35. Pete L. Clark
    Course notes, open problems, publications and preprints by Clark, who teaches at the University of Georgia, and does research primarily in number theory and arithmetic geometry. See, in particular, Clark's freely downloadable PDF expositions on commutative ...more>>

  36. Peter Ash's Thoughts on Math and Education - Peter Ash
    Musings on doing and teaching mathematics, book reviews, and math problems both elementary and advanced from the creator of Cambridge Math Learning. Blog posts, which date back to August of 2007, include "Very Proper Fractions"; "Physical Models for Non-Euclidean ...more>>

  37. Peter Doyle - Mathematics, Univ. of California at San Diego
    Advanced tutorials, proofs and papers, mostly statistics, probability, geometry, and graph theory, but with examples from other mathematics areas as well. Don't miss Dr. Doyle's Flip Flops. ...more>>

  38. Peter Gustav Lejeune Dirichlet - Australian Mathematics Trust
    A biography of the mathematician that discusses his theorem, introduction of the function notation y = f(x), boundary problems, minimization principle, and the Pigeonhole Principle. ...more>>

  39. Peter J. Lu - Department of Physics, Harvard University
    Lu's mathematical and historical research has revealed new insights in medieval Islamic quasicrystalline tilings and the earliest machines, such as the one he suggests precisely interconverted the linear and rotational motion responsible for the distinctive ...more>>

  40. peterlu.org - Peter Lu
    Publications and research into medieval Islamic geometry (e.g., decagonal and quasicrystalline tilings in its architecture), soft-matter and colloid physics, high-performance imaging, ancient Chinese technology (e.g., first use of diamond, early precision ...more>>

  41. Peter Olver's Home Page - Peter Olver
    Publications, seminar and conference talks, and more resources from the Head of the University of Minnesota's School of Mathematics. Download notes of Olver's lectures on applied mathematics, numerical analysis, orthogonal bases and the QR algorithm, ...more>>

  42. Peterson's Education Center
    A leading provider of information on U.S.-accredited educational institutions in the U.S. and abroad. Topics include: Summer Programs for Kids and Teens; Public Schools K-12; Private Day and Boarding Schools; Vocational-Technical Schools; Undergraduate ...more>>

  43. Petits Textes sur l'éducation - Laurent Lafforgue
    Essais écrit par le laureat de la medaille Fields 2002, incluent "De l'école et de ce qui fonde la valeur de la culture et du savoir" et "De la culture générale des futurs instituteurs et professeurs" et "Les mathématiques ...more>>

  44. Pfaff's Method (III): Comparison with the WZ Method (Organic Mathematics Proceedings) - George Andrews
    In the 1990's, the WZ method has been the method of choice in resolving new conjectures for hypergeometric identities. The object here is to compare the WZ method with Pfaff's method. Such a comparison should (it is hoped) provide some suggestions for ...more>>

  45. Phalanstère - Équipe de Combinatoire Algébrique, Université de Marne-la-Vallée
    Research into the relations between algebra and combinatorics. Membres; Publications; Logiciels; Séminaire. In French. ...more>>

  46. Phase Portraits for ODE's and Autonomous Systems - Mansfield, Beukers; Mathematics Dept., Penn State University
    A Java applet that allows the user to draw the direction field and integral curves of an ODE. You may also plot a single first order equation by letting x'=1. Or better yet, since dy/dx = y'/x', to solve dy/dx = f(x,y), choose any two functions whose ...more>>

  47. Phase State Diagrams - Harold Brochmann
    Phase diagrams reveal much information about physical phenomena. Brochmann illustrates with a variety of graphs created by computer programs. Phase state diagrams of unstable orbits reveal 'strange attractors', useful in a variety of fields including ...more>>

  48. PhD! ... plus epsilon - Adriana Salerno
    Having earned her math doctorate in 2009, Salerno writes "about some of the challenges I've encountered while teaching, attempting to do research, and the lesser known aspect of 'service'" on institutional committees. In addition to blogging about "publish ...more>>

  49. Philosophy of Mathematics Education Journal - Paul Ernest; School of Education, University of Exeter, UK
    A page with links to past issues of the journal, formerly the Philosophy of Mathematics Education Newsletter, along with links to information on the Falmer Book Series 'Studies in Mathematics Education', the Masters program in mathematics education at ...more>>

  50. Philosophy of Science - David Banach
    A syllabus and collected resources for a course in the philosophy of science, including excerpts from various books. Topics include ancient Greek science and mathematics: the Golden Section, Pythagoras, infinity and continuity, and Plato and Aristotle, ...more>>


 
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