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  1. 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>>

  2. 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>>

  3. 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>>

  4. 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>>

  5. 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>>

  6. The Projects of R. W. Gray - Robert W. Gray
    Geometric coffee tables, an introduction to polyhedra and the jitterbug (a dynamic polyhedron) that draws on the golden ratio, a collection of notes with respect to R. Buckminster Fuller's work, photos of a dome frame Gray built with students at Oswego ...more>>

  7. 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>>

  8. 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>>

  9. 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>>

  10. 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>>

  11. 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>>

  12. 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>>

  13. 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>>

  14. 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>>

  15. 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>>

  16. Quizma --> Matemática Cálculo Robótica - Harold Suárez Guzmán
    In Spanish: Clases y Orientación en Matemáticas Cálculo y Robótica. Fórmulas - Demostraciones - Ejercicios - Ejemplos - Cálculo Interactivo. Algebra, Logaritmos, Trigonometría, Geometría, Estadística, Ecuaciones, Problemas de Planteo, Funciones, Geometría ...more>>

  17. Raccordo tangenziale tra superfici toriche - isawi
    In Italian: "Ricerca riguardante la messa appunto di un procedimento di costruzioni geometriche capace di determinare delle superfici inviluppanti tre quadriche di rotazioni assegnate ( sfere, ellissoidi, parabolidi o iperbolici). I risultati raggiunti ...more>>

  18. Rafael Pacheco - Rafael Pacheco
    In Portuguese: lessons and materials centered on high school geometry. ...more>>

  19. R. Buckminster Fuller on PBS - Thirteen / WNET
    A biography of R. Buckminster Fuller, with explanations and illustrations of inventions such as the Dymaxion house, Dymaxion car, Dymaxion bathroom, and geodesic dome. Explore Fuller's Dymaxion map, John Kuhtik's Fly's Eye Dome, the World Game, and the ...more>>

  20. Real World Math - Thomas J. Petra
    Lessons that use Google Earth to teach math include Oil Spill Estimates and Scientific Notations; Iditarod Challenge and Typhoon Project; Four Color Map and Mazes & Labyrinths; Crop Circles and Fractal Measurement; Lunar Sports and Rockets. Each lesson ...more>>

  21. Real World Math Via the Internet - Wendi Fein, M.A., Heritage Online
    K-12 math using real world problems and data that will support interdisciplinary teaching of science, social studies, history and business. Teachers in this course take advantage of the Internet for class discussions and to access material, and prepare ...more>>

  22. Recommended Mathematics Literature - International Mathematics Olympiad (IMO)
    A page of readings recommended by the International Mathematics Olympiad in association with Amazon.com Books. Major sections include: Problem Solving; Collections of Mathematical (Competition) Problems; Anthologies and Surveys; Number Theory; Analysis; ...more>>

  23. Recursion in Space - 21 Isometric Models - Ernest V. Miliauskas
    Mathematical constructions, sub-assemblies or subsets of an infinite set, presented in a slide show that demonstrates the author's interest in symmetric three-dimensional forms. From chalk talks in advanced spacial studies given at Ryerson University ...more>>

  24. Religious schools inspire math reasoning - B. Bower - Science News Online
    Students at ultraorthodox Jewish schools, who study mainly holy texts, outperform most students at mainstream schools on tests of geometric reasoning, perhaps because of the emphasis on reflection and considering different perspectives. ...more>>

  25. Replacing Iowa and New Hampshire (Math Chat) - Frank Morgan, MAA Online
    Answer to the challenge: Propose a new system for selecting Presidential candidates. Winning answer by Joe Shipman: a year before the primaries start choose five congressional districts at random to have a primary the last week in January and five more ...more>>

  26. Research in Geometric, Symbolic and Scientific Computing - Dept. of Computer Science, Univ. of North Carolina-Chapel Hill
    Research projects: Geometric and Solid Modeling, Interactive Collision Detection for Simulated Environments, Immersive Design, Rendering Curved Models, Symbolic and Numeric Manipulation of Polynomial Systems. Also recent papers and technical reports, ...more>>

  27. Resource Bibliography: Children's Trade Books in Math - Beth G. Newhouse, Department of Mathematics & Statictics, Arizona State University
    A selected bibliography of books for kids that teach and reinforce math concepts, organized by topic: counting and number, number operations, large numbers, money, geometry, algebra, miscellaneous topics. Originally compiled by Dorothy Giroux and Denise ...more>>

  28. Riverdeep | Mathematics - Riverdeep Interactive Learning Limited
    Online resources for students, educators, and parents, that build on Riverdeep Interactive Learning's courseware and interactive simulations. Read about or demo Destination Math, a curriculum on CD-ROM in Basic Mathematics, Pre-Algebra, and Algebra I ...more>>

  29. Room 8 Geometry Book - Ms. Woods' First Grade
    Shape drawings by first-graders: Prelude; Shapes - Triangles, Circles, Ovals, Squares, Rectangles, Diamonds, Pentagons, Hexagons, Octagons, Other Shapes; Forms - Cubes, Rectangular Prisms, Pyramids, Spheres, Cylinders, Cones; Concepts - Corners, Angles, ...more>>

  30. S3-Triplett als 3D-Welt und als Animation - Stefan Scheller
    Ein S3-Triplett (drei orthogonale Projektionen) wartet mit überraschenden Effekten auf. Besonders interessant wird das Triplett, wenn es als VRML-Animation betrachtet wird (VRML-Plug In vorausgesetzt). A GIF-animation shows a S3-triplet. When watched ...more>>

  31. Sacramento Area Math Help and Tutoring - Just Math Learning Centers
    Just Math provides math help, tutoring and SAT prep for Sacramento area children through college students. Skills training in elementary math, algebra, geometry, and calculus. ...more>>

  32. Sacred Geometry - Bruce Rawles
    "In nature, we find patterns, designs and structures from the most minuscule particles, to expressions of life discernible by human eyes, to the greater cosmos. These inevitably follow geometrical archetypes, which reveal to us the nature of each form ...more>>

  33. San Diego Math Tutor - Juan Castaneda
    Math Tutor in San Diego. Offering test preparation and help with Algebra, Calculus, Geometry, Trigonometry, and Statistics. ...more>>

  34. San Diego Tutor
    A San Diego-based in-home tutoring company, San Diego Tutor offers a Scholarship program for clients who can't afford high school math and science tutoring. ...more>>

  35. The Sands of Time - Troy Jones
    The author uses ridges in piles of salt to model geometric concepts. This page features an article (PDF format), PowerPoint presentation, Geometer's Sketchpad file, and textbook reference for a classroom exploration of such concepts. ...more>>

  36. Saxon Publishers, Inc. - Harcourt Achieve
    Saxon publishes educational textbooks and other teaching materials for the primary and secondary education markets (Grades K-12) as well as for the home study market. The Saxon method of teaching math stresses "fundamentals." Site includes lists of inservices, ...more>>

  37. S-Calculate - Sookshma Chetas Softwares Pvt. Ltd.
    Key values into the boxes to expand algebra expressions, calculate geometry areas and volumes, and convert weights, distances, time, memory, and other units. ...more>>

  38. Science and Math Initiatives (SAMI)
    A database/clearinghouse of resources, funding, and curriculum for rural math and science teachers. List, search by title or description, or browse math resources by category. Originally a project of the Boulder Valley School District, Boulder, Colorado, ...more>>

  39. The Science of NFL Football - National Science Foundation (NSF)
    This 10-part series explores the science behind football. Running about four to five minutes in length, each video features an NSF-supported scientist explaining a selected scientific principle, while athletes from the National Football League (NFL) describe ...more>>

  40. The Science of NHL Hockey - National Science Foundation (NSF)
    This 10-part series explores the science behind hockey. Running about four to five minutes in length, each video features an NSF-supported scientist explaining a selected scientific principle, while athletes from the National Hockey League (NHL) describe ...more>>

  41. Scientific Graphics Project - MSRI - David Hoffman; Mathematical Sciences Research Institute
    A geometry catalogue of Minimal Surfaces (The Gauss Map, The Weierstrass Formula, Conformal Mapping, Stereographic Projection, and an extensive Minimal Surfaces Index); CMC Surfaces; Level Surfaces (Level Sets Approximating Minimal Surfaces, Curvature ...more>>

  42. Search Ask Dr. Math Archives - The Math Forum
    Search by keyword K-12 math questions answered by volunteer 'math doctors' in the U.S. and abroad. ...more>>

  43. Search Macalester PoW Archives - Stan Wagon; The Math Forum
    A full-text search of the archive of questions and answers of Stan Wagon's Macalester College Problem of the Week, hosted by the Math Forum, can be performed from this page. ...more>>

  44. Seedbed - Tom O'Brien, ed.
    Throughout the 1980s, Seedbed published articles on "the intellectual growth of children, and teachers' participation therein." Editor Tom O'Brien described the publication as a practical one, "where teachers are the principal authors and where teachers' ...more>>

  45. Self-Tutoring Math Kit - MATHCO Educational Materials
    All instruction is on cassette tape in both English and Spanish. The kit provides an Instruction Manual with explanations of over 50 mathematical objectives, including Place Value, Rounding Off, Operations of Whole Numbers, Decimals, Common Fractions, ...more>>

  46. Sequuntur.com: the FREE way to mesh generation !
    We are a research group offering FREE free-form triangular and tetrahedral mesh generation for open CASCADE (openCASCADE) models. ...more>>

  47. Shack's Math Problems - Michael Shackleford
    Pages of math problems ranging from basic math to differential equations. Each problem comes with a difficulty rating from one to four stars, roughly a measure of how much time it took Shackleford to do the problem. Includes answers and, usually, solutions. ...more>>

  48. Shape and Space in Geometry (Teachers' Lab) - Annenberg Media
    This lab, based on the professional development series and workshops broadcast on the Annenberg/CPB Math and Science Project Channel, explores the properties of objects (angles, surfaces) and the consequences of how these objects are positioned (where ...more>>

  49. The Shape of Space - Jeff Weeks
    This textbook surveys the basic geometry of two- and three-dimensional spaces —- stretching students minds as they learn to visualize new possibilities for the shape of our universe. Contains illustrated examples and engaging exercises intended to teach ...more>>

  50. Shortest Enclosures on Surface of Cube (Math Chat) - Frank Morgan, MAA Online
    The circle provides the least-perimeter way to enclose given area in the plane. What is the least-perimeter way to enclose given area in the surface of the unit cube? Answer: Al Zimmerman correctly finds that the best way to enclose small area is not ...more>>

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