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 PlaneMath - InfoUse, in cooperation with NASA Materials for elementary school students about math and aeronautics, designed to stimulate and motivate students with physical disabilities in grades 4-7 to pursue aeronautics-related careers via the development and delivery of accessible math education ...more>> Planet Perplex - Stefan Van den Bergh Collection of optical illusions, impossible objects, visual puzzles, and hidden images. ...more>> The Planimeter - Paul Kunkel The planimeter is a drafting instrument used to measure the area of a graphically represented planar region. The region being measured may have any irregular shape, making this instrument remarkably versatile. ...more>> Play Ball (SMILE) - Roslyn N. Matthews, South Shore High School A baseball lesson designed to teach students to compute batting and earned run averages; given general dimensions of the playing field and some equipment, change the units to the metric system; find the diagonal distance from 3rd base to 1st base; and ...more>> Plexagon - Pleated Hexagon - Paul Bourke, Ron Evans Plexagon is a new modular geometry based on the radial pleating of polygonal plates, and their joining or co-bracing into 3D modules. This engineering approach can form a very practical basis for modular greenhouses (using recycled plastic sheeting) and ...more>> Point Plots and Space Curves - Theo Gray Download a Mathematica notebook that defines the functions PointParamPlot3D, SpaceCurve, and PointSpaceCurve. These functions let you make discrete point plots in two and three dimensions. The SpaceCurve and PointSpaceCurve functions let you make three-dimensional ...more>> Polaroid Geometry Scavenger Hunt - Math Forum This activity presented by Ruth Carver at the Math Forum's 1996 Summer Institute, "Constructing Mathematics on the Internet," displays pictures of items found on this a hunt for a list of geometric items (tessellations, symmetry, concentric circles, shapes, ...more>> Polymath Love - Gary Smith Free and low-cost Macintosh software for middle school mathematics: over 200 programs written by a classroom teacher. Program descriptions and some free programs are available to download from the Web, or order the CD-ROM for \$100 U.S., which includes ...more>> Polyominoes - Slavik Jablan A plane topological disk (i.e. a plane region without "holes") consisting of n edge-to-edge adjacent squares is called a polyomino. This site offers a shape description: in every border square cell of a polyomino we could introduce two-sided mirrors perpendicular ...more>> Polytopes and Polyhedra - Dave Rusin; The Mathematical Atlas A short article designed to provide an introduction to geometric objects made from straight pieces: polygons, polyhedra, and generalizations. Applications and related fields and subfields; textbooks, reference works, and tutorials; software and tables; ...more>> Polytopes, Zonohedra, Zonotiles, Mathematica notebooks - Russell Towle Some of the author's endeavors in geometry, including studies of zonohedra, polyhedra, space-fillings, polytopes in higher space, and the discovery of new types of polyhedra and space-fillers. Mathematica notebooks are provided which create these kinds ...more>> The post-IMO97 web page - Olimpíada Matemática Argentina Problems and results from the math olympics held in Argentina in July, 1997. Available in English and Spanish, with problems also in French, Russian, German, and a host of other languages. ...more>> Potent Problems - Institute for Studies in Educational Mathematics A database of problems that deepen understanding of mathematics through multiple answers, approaches to an answer, interpretations, extensions, perspectives on a mathematical idea, layers of complexity, or algorithms. Potent problem content topics include ...more>> Power Math: Online Math Problem Solving Algebra, geometry, and arithmetic formulas for grades up to 9th. ...more>> PowerMath: the Virtual Reality Mathematics Teacher - Alexandre Menezes, PowerClassroom Software, LLC Modular, student-centered instruction software for Windows, based on visualization of mathematical ideas. Available in licenses from one to unlimited users. Demo CD available. Pricing and topics listed on web site. ...more>> Praktick - Praktick Learning private Ltd. Auto-scoring practice problems aligned to the UK's Central Board of Secondary Education (CBSE) Standards, from pre-kindergarten to grade seven. Questions adjust dynamically based on performance, while a timer counts up response time; incorrect answers ...more>> Pre-Algebra Problem of the Week - Math Forum Math problems for students learning algebraic reasoning, identifying and applying patterns, ratio and proportion, and geometric ideas such as similarity. The goal is to challenge students with non-routine problems and encourage them to put their solutions ...more>> The Precalculus Page Lesson plans and staff development activities with a problem-solving approach to precalculus, with materials on logarithms, the binomial theorem, and the law of sines, and problems (without answers) on algebra, exponential and logarithmic functions, other ...more>> Printable Math Worksheets - Homework for Kids Practice worksheets, most with randomly generated problems, on the following topics: learning numbers, addition and subtraction, multiplication and division, fractions, decimals, time, measurements, perimeter, area and volume, integers, set theory, equations, ...more>> Printable Math Worksheets - TestDesigner.com Free printable math worksheets, with answer keys, on number concepts, measurement, geometry, algebra, and statistics. Customize your own tests by selecting from the growing database of questions -- or create your own. ...more>> Printables: Student Handouts - The Learning Network PDF format printable handouts. Browse by grade or subject; check out the featured handouts; or search for a topic of your choice. Other resources also available through the Lesson Planning Center links on the site. ...more>> PRISM-NEO: Programming Remediation and Intervention for Students in Mathematics - Near North School District, Ontario, Canada Hands-on Geometer's Sketchpad manipulatives--plus "some things that cannot be done by hand!" The GSP files, as well as some QuickTime movies, are organized into Grade 7, Grade 8, and Grade 9 under the following topics: area, central tendency, equations, ...more>> Proactive Play - Punitha Jayaraman Articles on cognitive development research into, and activities to improve, spatial skills. Posts, which date back to October, 2012, have included "Hari Builds with Construction Set," "Piaget and van Hiele: Compare, Contrast and My Thoughts ...," "Hari's ...more>> 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>> 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>> 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>> Problems of the Week - Math Forum @ Drexel Our goal with the Problems of the Week is to engage students in non-routine, constructed-response mathematics investigations that integrate writing with problem solving in the math classroom. In addition to the Current PoWs and the Problems of the Week ...more>> Problem Solving in Mathematics - Jim Wilson; Univ. of Georgia Problems in algebra, geometry, conversion, cryptarithm, "mean," trigonometry, and a mixture of all, many with comments and solutions, from a course given in the Dept. of Mathematics Education at the University of Georgia. The site also provides links ...more>> 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>> Productive Struggle Group blog, with most contributions by secondary math and science teachers, that aims to "push teachers to learn in the same way that we push our students to learn" and "work together to make our struggles productive." Posts, which date back to March, ...more>> Professional Development Center (PDC) - Key Curriculum Press Professional development opportunities from summer institutes to weekend workshops for teachers across the United States, with scheduled 1-day, 3-day, and 7-day courses, as well as opportunities for custom offerings specific to district needs. In particular, ...more>> Professional Homework Help Solutions to your mathematics and statistics homework problems. Request a free quote. ...more>> Professora Karolina Barone Ribeiro da Silva - Karolina Barone Ribeiro da Silva Aulas de geometria incluem geometria esférica e geografia, geometria não euclidiana e a física, uma guia com atividades simples sobre geometria euclidiana plana, e "de Euclides a Poincaré." Veja tambem as coleções ...more>> Professor Geek - Jardel de Paula Pereira Blog educacional com atividades, vestibulares, simulados, jogos, dicas para estudantes, e mais. Antigamente conhecido como Aprendaki.tk. ...more>> The Professor in a Syllabus: Elementary Algebra - Vision Alpha Products Self-instructional elementary algebra and arithmetic. Learn at your own pace from dozens of brief, animated, independent, self-teaching modules. Watch videos of TPIAS in action for distance learning, and its demo, before subscribing. Also available at ...more>> Project-Based Instruction in Mathematics for the Liberal Arts - M. B. Ulmer; University of South Carolina at Spartanburg Information and activities/projects for a complete project-based post-algebra course for liberal arts majors, also suitable for use with high school courses following algebra. Activities are in PDF format. ...more>> Project Interactivate - Shodor Education Foundation, Inc. Interactive middle school lessons on number and operations, geometry and measurement, functions and algebra, and probability and statistics. They feature: online activities (illustrative Java applets including: Venn diagrams; clock arithmetic; Pythagorean ...more>> Project Poison Applet - Computer Science Dept., Trinity College Dublin A site created by first-year computer science students as a Java programming project. Each of 12 topics (Algebra; Geometry; Trigonometry; Calculus; Matrices; Sequences & Series; Complex Numbers; Vectors; Probability; Groups; Further Calculus; Further ...more>> Projet Folium Folium est un ensemble organisé d'articles sur les mathématiques, du cours aux biographies de mathématiciens célèbres, en passant par les exos les plus classiques et les théorèmes les plus puissants. Articles ...more>> 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>> ProTeacher - ProTeacher A teacher-created resource site for elementary schoolteachers, offering lessons and materials, education news, links for finding schools, news and weather, and a reference desk. An index of links to information on various academic subjects includes Mathematics ...more>> ProveIt! Two-Column Proofs Practice Tool - Michael Ferraro Michael Ferraro of Balboa High School in San Francisco, CA, created this tool for students to practice their two-column proof skills. Choose a topic to begin, and choose statements and reasons from the list given. As you go, there are options to remove ...more>> 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>> 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>> Puzzles - Martin Watson Blogs, comments, musings, design sketches, and photographs of mechanical puzzles by an avid collector and craftsman. Puzzle news, the author's own burrs (Watson's wormhole, digigrams, Dutch cubist), in-depth explorations of manipulative puzzles (Puzzles ...more>> 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>> The Puzzle TOAD - Tom Bohman, Oleg Pikhurko, Alan Frieze, and Danny Sleator, School of Computer Science, Carnegie Mellon University Send the authors your solutions to their challenging graph theory, number theory, geometry, discrete mathematics, logic, and other puzzles. Re-visit periodically to see the latest question, and download PDFs of solutions of past problems. ...more>> 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>> 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>> 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>>
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