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  All Sites - 1719 items found, showing 1251 to 1300

  1. Probability: Rolling Dice - NASA Lewis Learning Technologies Project
    Probability: If a die is rolled 18 times, how many times is the number 2 expected to come up? A detailed answer is provided. From NASA's 9th Grade Math Proficiency Test. ...more>>

  2. Problem at the Art Gallery - Ivars Peterson (MathLand)
    The Crystal Art Gallery was being readied for its grand opening, and I had to figure out how many guards were needed to make sure that every wall of paintings was under scrutiny. I was also ordered to keep costs as low as possible. The trouble was that ...more>>

  3. Problem-Attic - EducAide Software
    Thousands of questions from New York State Regents exams, the National Assessment of Educational Progress (NAEP), the Trends in International Mathematics and Science Study (TIMSS), academic competitions, and other test banks. Sign up for a free account ...more>>

  4. Problem Corner - Les Reid; Southwest Missouri State University (SMSU)
    High School, Advanced, and Challenge problems, updated monthly (approximately). High School: solutions are not solicited, although feedback (generalizations, suggestions for future problems, etc.) is appreciated. Each month, the solution to the previous ...more>>

  5. The Problem of Points - Isaac Reed
    An age-old gambling problem led to the development of probability by French mathematicians Pascal and Fermat in the 17th century. ...more>>

  6. Problem of the Month - Grovedale Secondary College, Grovedale, Victoria, Australia
    Elementary level problems posted monthly for local elementary school students. Examples include: Sums of square numbers; Trial and error spacial arrangement problem; Sums of whole numbers; Jokes/Riddles in code; Order of operations using number cards; ...more>>

  7. Problem of the Week - Alberto L. Delgado, Bradley University, Peoria, IL
    College-level problems, posted weekly for the current semester, with archives of problems and solutions starting in spring 1997, for number theory, combinatorics, probability, calculus, etc. ...more>>

  8. Problem-of-the-Week - David Poole; Department of Mathematics, Trent University, Canada
    Most of these problems can be done using only high school mathematics and logical reasoning. Eight problems with solutions and one without, from the fall of 1997, at Trent University, Canada. An email contact is listed, for those outside the university ...more>>

  9. Problem of the Week - Dr. Annalisa Crannell; Franklin & Marshall College
    Puzzles to solve in number theory, geometry, probability, cryptography, and the like. See problems from 2006, 2005, 2004, 2003, 2002, 2001, 2000, 1999, 1998, and 1997. ...more>>

  10. Problem of the Week - Duc Huynh
    A new math problem each week, with an archive of past problems. ...more>>

  11. Problem of the Week - Purdue University
    A panel in the Mathematics Department publishes a challenging problem once a week and invites college and pre-college students, faculty, and staff to submit solutions. Solutions are due within two weeks from the date of publication and should be sent ...more>>

  12. Problem of the Week - Richard Mann
    A new word problem, math challenge, or other puzzle posted each week since November, 2008, by a Saint Ann's School teacher, with student acknowledgements to follow. ...more>>

  13. Problem of the Week - Steven Locke; Dept. of Mathematical Sciences, Florida Atlantic University
    Problems in set theory, sequences, and series, with archives dating back to November, 2003. Locke offers a reward for the FAU student who submits the best solutions. ...more>>

  14. Problem of the Week - U.S. Military Academy
    A current college-level Problem of the Week, with links to past problems and solutions, a project of the Pi Mu Episilon chapter of the United States Military Academy. MathCad or Word are needed to view past problems and solutions. ...more>>

  15. Problem Pictures - Richard Phillips
    A CD-ROM of 184 attractive, unusual, or puzzling color photographs accompanied by activities for mathematics teaching. Images may defy explanation, motivate investigation, or inspire the viewer to answer a question. Other pictures may be the starting ...more>>

  16. Problems and solutions of the UIUC Undergraduate Math Contest - University of Illinois at Urbana Champaign
    A locally organized problems contest, held in the latter part of the spring semester. It is similar in format and content to the Putnam competition, but the problems are easier. Results, winners, and contest problems since 1996 are on the Web. ...more>>

  17. Problems - Bojan Mohar
    Conjectures in graph theory ranging from paths to colorings to matchings to crossings. With references, links to other collections of open problems, and chapters of the book that Mohar authored with Carsten Thomassen, Graphs on Surfaces. ...more>>

  18. Problem Sets for Honors Multivariate Calculus - Stephen B. Maurer; Dept. of Mathematics & Statistics, Swarthmore College
    This series of multivariate calculus problem sets supplements and is drawn from texts such as C. H. Edwards, Jr.'s Calculus of Vector Functions and Buck's Advanced Calculus. Problems include Change of Variable in Limits, Matrix Norms and Quadratic Forms, ...more>>

  19. Problems in Topological Graph Theory - Dan Archdeacon
    An ongoing list of open questions in topological graph theory, to which the author invites contributions. Classical questions on genus; coloring graphs and maps; drawings and crossings; paths, cycles, and matchings; symmetries; locally planar embeddings; ...more>>

  20. The Problem Site - Douglas Twitchell
    Math puzzles, brainteasers, strategy games, web quizzes, and informational pages. Flash-powered math games include Adders, Zap (slide tiles to move digits and add up to a specified sum), Side By Side (number re-arrangement), One To Ten (given four numbers, ...more>>

  21. Problem Solving Strategies - Finlay McQuade, Boğaziçi University (Turkey)
    Strategies for solving problems, each illustrated with sample math challenges and worked solutions: draw a diagram; make a list; guess and check; divide and conquer; look for a pattern; start at the end. Also available in Turkish. ...more>>

  22. Problems with a Point - Education Development Center, Inc. (EDC)
    A collection of problems designed to help students in grades 6-12 learn new mathematical ideas by building on old ones. Varying in difficulty and approaches, these problems are useful for teachers, students, parents, math clubs, home-schoolers, and others. ...more>>

  23. Procon Technology - Maths Tips and Tricks - Peter King
    Math tricks, divisibility rules, and mental math tricks, many from a book by Kjartan Poskitt called Numbers - the key to the universe, one of the books in the Murderous Maths series published by Scholastic. ...more>>

  24. Profile (John H. Conway): Not Just Fun and Games - Mark Alpert, Scientific American
    A short biography of the English-born Princeton University mathematician and a discussion of some of his major mathematical contributions. ...over the past three decades Conway has made some of his greatest contributions to mathematical theory by analyzing ...more>>

  25. Prof. McFarland's Help Center for Mathematics Students - Thomas McFarland, Department of Mathematical and Computer Sciences, University of Wisconsin System
    McFarland's handouts for courses such as Finite Mathematics, Basic Algebra, Calculus, and The Logic of Chess. Interactive (JavaScript) self-tests or explorations cover integer and fractional exponents; factoring; reducing, adding, multiplying, and dividing ...more>>

  26. Progetto Polymath - Federico Peiretti
    In Italian: E' un progetto didattico avviato da un gruppo di docenti delle superiori, dell'UniversitÓ e del Politecnico di Torino, rivolto agli studenti delle superiori, con l'obiettivo di ritrovare la dimensione culturale della Matematica. Pubblica ogni ...more>>

  27. Progetto Rhoda - Emilio Brengio
    "Numeri con qualità." Software (.exe) per la didattica della matematica nella scuola elementare: problemi; operazioni; geometria; logica; procedure e verifiche; poligoni, angoli, perimetri, e aree; e giochi. ...more>>

  28. Project Euler - Colin Hughes
    Browse hundreds of challenging problems that require mathematical insights as well as computer and programming skills to solve. Popular puzzles include "Add all the natural numbers below one thousand that are multiples of 3 or 5," "By considering the ...more>>

  29. project Eureka
    project Eureka is a collaboratively edited site for problem solvers/creators—regardless of problem or field. Add problems with quantifiable results; or group problems in a test. ...more>>

  30. ProMath Archive - Dept. of Mathematics, University of Kentucky
    A 1995-96 competition offering Lexington area high school students an opportunity to work on interesting, challenging mathematical problems and to develop their problem solving skills and taste for individual work in Mathematics. The program had two complementary ...more>>

  31. Proofs in Mathematics - Interactive Mathematics Miscellany and Puzzles, Alexander Bogomolny
    A discussion of the value of proofs in the classroom, followed by a collection of proofs classified as either simple or charming. Simple proofs: Number of vowels in a Lewis Carroll game; Pigeonhole Principle; Number of X's and O's; Coloring points in ...more>>

  32. Proofs Without Words - Cut the Knot!, Alexander Bogomolny
    Martin Gardner wrote, "There is no more effective aid in understanding certain algebraic identities than a good diagram. One should, of course, know how to manipulate algebraic symbols to obtain proofs, but in many cases a dull proof can be supplemented ...more>>

  33. Proof: The Sum of Prime Twins is Divisible by 12 - Mathematics Dept., College of Marin
    Prime twins are prime numbers that are two numbers apart. For example 41 and 43 are prime twins. Can you PROVE that the sum of prime twins is divisible by 12? (This proof doesn't work for the prime twins 3 and 5.) ...more>>

  34. Public Domain Materials - Mike Jones
    A collection of public domain instructional and expository materials from a US-born math teacher who teaches in China. Microsoft Word and PDF downloads include a monthly circular consisting of short problems, "The Bow-and-Arrow Problem," and "Twinkle ...more>>

  35. Punctured Polyhedra - Ivars Peterson (MathTrek)
    A tetrahedron has four triangular faces, four vertices, and six edges. When a vertex of one tetrahedron pierces the face of a second tetrahedron it forms a new, more complicated polyhedron: one triangular face has a triangular "hole" where the face was ...more>>

  36. Pure Maths, Impure Thoughts - David A. Santos, Community College of Philadelphia
    Includes lecture notes in elementary algebra, linear algebra, number theory, probability, a problem seminar, plus review material in precalculus and multivariable calculus. Selections available en castellano. ...more>>

  37. Purplemath - Your Algebra Resource - Elizabeth Stapel
    Algebra modules provide lessons, practical tips, hints, worked examples, and point out common mistakes in basic triangle length (trigonometry) values, calculators (what model to buy), canceling units, domain and range, exponents, factoring quadratics, ...more>>

  38. Putnam Competition - Patrick J. Fitzsimmons
    Postscript, Adobe Acrobat, and dvi downloads of problem sets from the William Lowell Putnam Mathematical Competition dating back to 1980. With links to solutions hosted by others, and information on participation. ...more>>

  39. Putnam Exams - Dave Rusin
    Solution sets and comments compiled from postings on the sci.math newsgroup. Online resources and citations for exams dating back to 1987. ...more>>

  40. Put the Heart into Mathematics: Cardiac Output, Rates of Change and Accumulation (i-Math Investigations) - Illuminations; National Council of Teachers of Mathematics (NCTM)
    An online, interactive, multimedia math investigation. This activity explores the measurement of the amount of blood being pumped by a heart. The goal of this i-Math investigation is a rich exploration of concentrations (mixture problems), rates of change ...more>>

  41. PuzzleBeast - James W. Stephens
    A collection of computer-generated puzzles, some illustrated with Java applets, some with solutions included: The Fried Okra Perplexity, A Dozen Irritating Sliding Block Puzzles, The Bulbous Blob Puzzle, Meandering Monk Maze, The Kung Fu Packing Crate ...more>>

  42. Puzzle Choice
    A wide choice of puzzles and games for all ages, including crosswords, wordsearches, brainteasers, number puzzles (a calculator is provided), logics, teacher resources and other online games, including mazes. ...more>>

  43. Puzzle Fun - Rodolfo Kurchan
    An online newsletter edited by Rodolfo Kurchan (Buenos Aires - Argentina) about polyominoes and other puzzles. Back issues are on the Web. ...more>>

  44. Puzzlemaker - Discovery Education
    A puzzle generation tool for teachers, students and parents. Create and print customized puzzles, including math squares and number blocks, online, or buy a CD with editing tools and other extras. ...more>>

  45. Puzzle of the Week - Ralph Grove
    A small archive of math and word puzzles having to do with patterns, permutations, and probability, with solutions, from a professor of computer science at Indiana University of Pennsylvania. ...more>>

  46. Puzzle Page - The Black Stump Ltd.
    More than 150 links to puzzle sites on the Web. A new site is added each week. ...more>>

  47. Puzzler - Franklin Institute Online
    Puzzles from the inQuiry Almanack Puzzle Archive: e.g. Cryptograms, January, 1998. Coded messages hide famous quotations. A clue is offered to begin breaking the code, and an answer key is provided. One puzzle a month from March of 1995 through July of ...more>>

  48. Puzzlers - Bryan Clair, University of Chicago
    A collection of Clair's favorite puzzles (no discussion or answers are provided): The Nine Dots; Weighing Coins; The Dollar Hotel, Planning an Orchard; The Math Department; Tea and Cream; Bugs on a Square; River Crossing; More Crawling Bugs; The Unexpected ...more>>

  49. Puzzles
    A blog of math puzzles. Post your answers in the comments sections. ...more>>

  50. 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>>


 
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