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All Sites - 246 items found, showing 151 to 200
 Platonic Solids and Euler's Formula - Margo Lynn Mankus The lesson plan for Platonic Solids and Euler's Formula offers definitions for simple closed surfaces, solids, and regular polyhedra. After observing platonic solids nets, students complete the provided (blank) table for recording vertices and edges of ...more>> The Platonic Solids and Polyhedra - Paul Flavin The 5 Platonic Solids and one odd-ball polyhedron (a soccer ball). The kinship among the polyhedra is reflected in a 'family photo'. The polyhedra are laid out in a triangular pattern, with the tetrahedron alone in its row, joined with the other Platonic ...more>> Platonic Solids - Buckley; Metropolitan School District of Pike Township, Indianapolis, IN A demonstration of the construction of the five Platonic Solids from Book 13 of Euclid's Elements. Contents include: Prop 13 - pyramid; Prop 14 - octahedron; Prop 15 - cube; Prop 16 - icosahedron; Prop 17- dodecahedron; and a Glossary Of Terms. ...more>> The Platonic Solids Information Site - Dan Radin Information, computer graphics, a computer-animated video, teaching tools, and links pertaining to the three-dimensional geometry of the polyhedron in its many forms. Radin focuses particularly on the five Platonic solids--the tetrahedron, the cube, the ...more>> Platonic Solids - Paul Bourke Definitions, formulas, and illustrations of the three-dimensional regular polyhedra: tetrahedron, octahedron, hexahedron (cube), icosahedron, dodecahedron, including the solids as drawn in Kepler's Mysterium Cosmographicum, and as represented in stone ...more>> Platonic Solids - Rüdiger Appel Dwnload GIF animations, with shadow effects, of the five Platonic solids. Also available in German. ...more>> Platonische Körper - Klaus Bernt Nets of the Platonic solids to fold. Download in postscript format for printing. In German. ...more>> Plato's Molecule - Ivars Peterson (MathTrek) In his dialogue Timaeus, the Greek philosopher Plato (427-347 B.C.) carefully laid out his reasoning for ascribing certain geometric shapes to the minuscule particles that constituted the four elements of matter. In his view, these elements - fire, air, ...more>> Poly and Poly Pro - Pedagoguery Software Mac and Windows shareware programs for exploring and constructing paper models of polyhedra. With Poly, you can manipulate a polyhedral solid on the computer and print out a flattened version (a net) which can then be cut out, folded, and taped, to produce ...more>> Polydron British vendors of two and three dimensional, hands-on, geometric modelling systems and other geometric toys. Polydron Corporation history, online catalogue, and order form. To purchase Polydron products in the United States, contact Polydron International ...more>> Polyedergarten - U. Mikloweit Photographs of paper models of uniform polyhedra, prisms and compounds. Versions of the site also exist in German and French. ...more>> Polygons, Polyhedra, Polytopes - Russell Towle Polytope is the general term of the sequence, point, segment, polygon, polyhedron, ... . Towle offers several pages devoted to the theory of polytopes, from polygons to star polytopes in 4-space, including Mathematica notebooks with constructions. ...more>> Polyhedra - Albert P. Carpenter Photos of paper models of discontinuous "nolids," or zero-volume polyhedra. Inspired in part by the work of Allan Holden and his book Shapes, Space and Symmetry, Carpenter's images include antinanotubular polyhedra; carbon based nanostructures (polyhedra ...more>> Polyhedra and Polytopes (The Geometry Junkyard) - David Eppstein, Theory Group, ICS, UC Irvine An extensive annotated list of links to material on geometric properties of polygons, polyhedra, and higher dimensional polytopes (particularly convex polytopes). ...more>> Polyhedra Collection - V. Bulatov Galleries of polyhedra shown using JPEG pictures and 3D objects in VRML2.0 format. Uniform polyhedra; Duals; Compounds; Johnson's solids; 59 stellations of icosahedron; 270 stellations of deformed dodecahedron; symmetric stellations of rhombic triacontahedron: ...more>> Polyhedra (Geometry and the Imagination) - Conway, Doyle, Gilman, Thurston; The Geometry Center A polyhedron is the three-dimensional version of a polygon, a three-dimensional figure made by gluing polygons together. This handout discusses polyhedra, presents explorative activities, and supplies a "homework" assignment. Includes the first 20 Greek ...more>> Polyhedra in the Classroom - Suzanne Alejandre Middle School student activities to pursue with a computer in the classroom. Introduction to Polyhedra; paper nets to print out and fold; Kaleidotile; Buckyballs; Crystals (paper nets, systems); Cube coloring problems; links to polyhedra on the Web. ...more>> Polyhedral Solids - Tom Gettys The study of polyhedra is one of those special areas of Mathematics which allow the amateur and expert to work with an equal delight. The Platonic Solids; The Archimedean Solids; The Kepler-Poinsot Polyhedra; Compound Solids; Stellated Polyhedra. See ...more>> Polyhedra - Peter Cromwell Ancient manuscripts from Egypt and China relate ideas concerning the calculation of the volumes of polyhedra, while the Greek tradition of geometry gave us the construction of the regular polyhedra or Platonic solids. In modern times, polyhedra and their ...more>> Polyhedra plaited with paper strips - H. B. Meyer A guide to generating certain polyhedra (Platonian, Archimedian and other solids) by plaiting paper strips (glueless method). In several cases pattern download of the paper strips is possible. In German and English. ...more>> Polyhedra - Rolf Asmund A gallery of regular polyhedra, snub uniform polyhedra, deltahedra (polyhedra consisting only of equilateral triangles), and polychora; with animations, still graphics, and some taxonomic data (vertices, edges, faces, polygons, radii, and more). Mobius ...more>> Polyhedra Sketches - Bill Finzer, Key Curriculum Press Sketches showing the platonic solids in true perspective. You have control over the placement of the picture plane, the station point, and the horizon. An animation button rotates the figure. Some of the sketches show in 3D if you have a pair of 3D glasses. ...more>> Polyhedron: An application in solid geometry - Stelian Dumitrascu Software based on "deduction-free geometry," which allows the user to perform various actions upon solids as if holding these solids in your hands. It simulates a number of tools, such as the ruler, protractor, setsquare, compass, bisector, saw, and eraser. ...more>> Polyhedrons: PolyMod Polyhedron Modeler - Daniel Grunberg Free software for creating regular and irregular 3-dimensional polyhedrons on the screen, view them from different angles, then print out their corresponding nets or templates to glue together to form the polyhedron. ...more>> Polyhedron Templates - Dan Grunberg Design your own polyhedron paper models to print out, cut, fold, and assemble with glue. Build a net by choosing from among the five Platonic solids (tetrahedron, hexahedron, octahedron, dodecahedron, icosahedron), or use the advanced button to specify ...more>> Polymorf - Rick Engel A math manipulative, construction set toy, model building kit, and 3D puzzle all in one, used for modeling polyhedra and the structure of molecules and crystals. Build life-like geometric models of creatures, vehicles, and structures. For all ages. ...more>> Polyominoes - Kevin Gong Information and Polyominoes software to download. A polyomino is a piece made up entirely of squares connected edge-to-edge. For example, a domino is a polyomino with 2 squares. In this program, you can use pentominoes, tetrominoes, trominoes, hexominoes, ...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>> 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>> 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>> Professors Rethinking Options in Mathematics for Prospective Teachers (PROMPT) - Humboldt State University Mathematics Department A program funded by the National Science Foundation to bring together mathematics faculty members from across the country to explore the question, "How can we prepare elementary school teachers to teach for the future rather than the past?" The purpose ...more>> 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>> 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>> Quadrivium - Dennis, David; Addington, Susan "Dedicated to the reform of mathematics education and curriculum through a modern reinvention of the medieval quadrivium" — the upper four liberal arts of geometry, astronomy, arithmetic, and music. The secondary curriculum "Mathematical Intentions" ...more>> the radical rational ... - Pam Wilson Blog by a National Board Certified Teacher (NBCT) of Algebra II and Geometry "in search of innovative ideas with a well-balanced approach for the math classroom." Posts, which date back to July, 2011, have included "The Purpose of Life and The Quadratic ...more>> Recreational Mathematics Topics - Steven Dutch; University of Wisconsin - Green Bay Contents: Symmetry, Crystals, Polyhedra and Tilings: an extensive, illustrated collection including reflectional and rotational symmetry; repeating patterns in two and three dimensions; building crystal forms with unit cells; regular, Archimedean, radial, ...more>> Rectilinear Geometry (The Geometry Junkyard) - David Eppstein, Theory Group, ICS, UC Irvine An extensive annotated list of links to material on geometric problems defined on squares and rectangles, higher dimensional boxes, cubes, and hypercubes, right triangles and other right-angled figures, and "taxicab geometry" in which distances are measured ...more>> Reflections of a High School Math Teacher - Dave Sladkey Blog by a teacher at Naperville (Illinois) Central High School. Posts, which date back to March, 2008, have included "Thinking Blocks," "School is a Place to Learn from your Mistakes," "More on When Students Teach," "Pop Goes the Weasel and the Quadratic ...more>> Rhombic Dodecahedron: Hidden Within or Surrounding the Cube? - Joyce Frost, Kris Koch, Park City Mathematics Institute This activity illustrates the interconnections between a cube and a rhombic dodecahedron, using a Zome Tool or drinking straws and ribbons. One of the PCMI Resources for Teachers. ...more>> Robert Kaplinsky - Glenrock Consulting - Robert Kaplinsky Lessons consist of "The Challenge(s)," "Question(s) To Ask," "Consider This," and alignments to Common Core State Standards (CCSS): "How Can We Water All Of The Grass?" and "How Much Money Should Dr. Evil Demand?" and "How Did They Make Ms. Pac-Man?" ...more>> Rubik's Cube Information - Michael Reid All about Rubik's Cube - even a mailing list. Site contents include: the Nederlandse Kubus Club; Rubik's cube pages on the Web; Cube books; Sources of cube-like puzzles; the author's notes, including an optimal cube solver; other Cube solutions on the ...more>> Rubik's Cube Java Applet - Michael Schubart To twist the cube, press the mouse button over a cubelet face that belongs to the slice you want to move. Keeping the button pressed, drag the mouse in the desired direction; then release the button. Moving the whole cube is done in the same way - just ...more>> Rubik's Games - Androsoft Dedicated to the first PC CD-ROM game from Erno Rubik, Rubik's Games contains 5 sub-games: Rubik's Classic, Cover Up, Paint War, Rubik's Playground and ZigThrough. Download the Rubik's Games Web Site Plugin plug-in or a demo of the Rubik's Game CD-ROM. ...more>> Rubik's Online - Rubik/Seven Towns The official online site for the Rubik's cube. Play with the cube and other Rubik's games and puzzles online; find information on where to buy Rubik's products; use the forum to exchange views, opinions, comments, suggestions and anecdotes related to ...more>> Rubix Corner - Duane Cash The site includes information regarding the Duane Cash Cube Collection now featured at Hessport's Rubikshop in their "collectibles" section. New puzzles include the Rubik's Triamese, Fusion, Fusion+, SpeedFusion, 5x3, and 4x3 Cubes, which give those interested ...more>> Selected Recent Publications - George W. Hart Areas of Hart's research and pointers to further information, including a bibliography of his publications. Links to pages on: Multidimensional Analysis; Nonintrusive Appliance Load Monitoring; Telecommunications Network Management; Viterbi Algorithm ...more>> SketchMad - Nathalie Sinclair An archived resource, not currently updated: A resource center devoted to using The Geometer's Sketchpad in the classroom. Includes tips, strategies, lesson plans, and sketches for beginning and intermediate Sketchpad teachers, stories from the classroom ...more>> Solids Workshop - FacticsMax A program that allows you to select a square, triangular, pentagonal, or hexagonal prism, pyramid, or frustum; or a cylinder or cone, choose the height, side, (and frustum height) you desire, and print out a net pattern that will fold up into the selected ...more>> Solve My Maths - Ed Southall Blog of "puzzling questions that purposefully minimalise the amount of information explicitly given," written by the author of Yes, but Why? Teaching for Understanding in Mathematics. Posts by the University of Huddersfield maths education specialist's ...more>> Solving Rubik's Cube - David Lee Winston Miller A "best-fast" Arity Prolog program and demonstration of an efficient heuristic search method to solve Rubik's Cube. Examine the cube's topography (its flat layout) and "submachines." Documentation includes "Understanding the problem," "Why this approach ...more>>
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