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  All Sites - 232 items found, showing 201 to 232

  1. Symmetry - Rick Engel
    A lesson on the symmetry of the Platonic and Archimedean solids using Polymorf, a math manipulative product. Demonstrates inscription, truncation, sectioning, and space filling with polyhedra. ...more>>

  2. Synergetics on the Web - Kirby Urner, 4D Solutions
    R. Buckminster Fuller's "explorations in the geometry of thinking" is detailed in two thick volumes, Synergetics and Synergetics 2. Synergetics thoroughly permeates the rest of Fuller's writings as well. The invention for which Fuller is most famous, ...more>>

  3. Termesphere Gallery - Dick Termes
    Spherical paintings that use a six point perspective. View images of the paintings and read about the artist. Products and services include workshops, lectures, books, and models of the Platonic solids, as well as the painted spheres. ...more>>

  4. Tessellated Polyhedra - Jill Britton
    Full-page printable nets of each of the regular polyhedra, decorated with individual surface tessellations in full color. A higher-resolution black-and-white version of each tessellated net appears in Polyhedra Pastimes, by Jill Britton, published by ...more>>

  5. Tetrakys
    Interlooping equilateral, isosceles, and scalene triangles for building two- and three-dimensional geometric objects, exploring area and volume, and visualizing fractions and arithmetic operations. The foam composition of these colorful manipulatives ...more>>

  6. Thinking Fountain - Science Museum of Minnesota
    Thinking Fountain offers surprising and personal connections to science. It's a living card file full of ideas and activities. Includes the opportunity to add your own projects. See Shapes Cluster: Shapes & Math: Shape Walk, I C Shapes, Bubble Geometry, ...more>>

  7. TI-89 Calculus Calculator Programs
    TI-89 calculator programs for sale. Enter your variables and see answers worked out step by step: a and b vectors, acceleration, area of parallelogram, component of a direction u, cos(a and b), cross product, curl, derivative, divergence of vector field, ...more>>

  8. Tilings (Graphics Archive, Special Topics) - The Geometry Center
    Regular subdivisions of the plane or space. ...more>>

  9. Timothy Kasper
    Screencast geometry lessons, most less than five minutes long, narrated by a seventh grade teacher in Indiana. ...more>>

  10. Toys from Trash - Arvind Gupta
    Step-by-step photographic instructions for building elegantly simple, colorful "Math Magic" do-it-yourself manipulatives: Abacus, Flexagon, Triangle Grid, Flat Flexagon, Slipper Insets, Folding Pentagon, Tangram, Paper Octagon, Cylinder and Cone, Area ...more>>

  11. Transformulas - Jedidiah Butler
    Blog about transformational geometry, subtitled "picture = 100 formulas." Posts, which feature Butler's original GeoGebra applets and teaching notes, date back to March, 2014: "One Formula ... to Rule them All," "Circles Part 2: Angle Relationships," ...more>>

  12. Triangles and Pyramids: Playing Math! - Hollis Easter
    A "teachable" on the construction of free-standing pyramids made "by folding a single piece of paper, with only a single piece of tape to hold them together...." This blog post goes on to include photos of a net, diagrams, and "things to investigate": ...more>>

  13. Triangles and Simplices (The Geometry Junkyard) - David Eppstein, Theory Group, ICS, UC Irvine
    An extensive annotated list of links to material on triangles and their higher-dimensional generalizations (simplices), with a particular interest in partitioning regions into triangles, tetrahedra, or higher dimensional simplices, for various applications ...more>>

  14. triangular prism - Manjit Singh Atwal
    Download lessons and worksheets about triangular prisms, including finding surface areas and volumes. ...more>>

  15. Understanding Mathematics: A study guide - Peter Alfeld, University of Utah
    A resource and source of encouragement, with questions and Alfeld's comments (Are you frustrated working through heaps of meaningless problems that are all alike? Does the thought "I can look it up if I have to" occur to you frequently? Do you feel that ...more>>

  16. Une Balade dans le Monde des Polyèdres - Maurice Starck
    Les polyèdres convexes, non convexes, et intéressants: les polyèdres uniformes, les stellations de l'icosaèdre, des tétraèdres remarquables, le découpage d'un tétraèdre par un plan, les deltaèdres ...more>>

  17. Utah Elementary Mathematics - David A. Smith
    Blog of conceptual frameworks and other classroom resources for Utah educators implementing the Utah Core State Standards. Smith, the Elementary Mathematics Specialist at the Utah State Office of Education (USOE), has posted since October, 2013; and also ...more>>

  18. Videodiscovery
    A publisher and distributor of innovative multimedia products for educators and families. Laserdiscs and CD-ROMs for the K-12 and college market. Product offerings now include laserdiscs with accompanying software, as well as CD-ROMs for both the school ...more>>

  19. Vi Hart - Vi Hart
    Blog, videos of math "doodling," instructions for slicing food mathematically, and more from the self-described recreational mathemusician who considers math a hobby, with "special interests in symmetry, polyhedra, and surreal complexity. This usually ...more>>

  20. Volume of Water in an Aquarium - NASA Lewis Learning Technologies Project
    How much water will fit in an aquarium that is shaped like a box and is 10 inches high, 6 inches wide, and 14 inches long? A detailed answer is provided. From NASA's 9th Grade Math Proficiency Test. ...more>>

  21. Waldomaths - Ron Barrow
    Original applets on number, algebra and graphs; shape, space and measure; probability and data handling, including histograms; investigative tools (quadratic and cubic sequences); core (pure) mathematics; decision mathematics (network graphs and linear ...more>>

  22. Waterman Polyhedra and Maps - Steve Waterman
    World maps based on close packing of spheres that resemble B.J.S. Cahill's octahedral butterfly world map, but with only five degree graticule. With links to the mathematics behind the cartography, polyhedra applications, and other original findings. ...more>>

  23. Weekend Projects—Picnic Geometry - Make Podcast
    This video shows how to build an icosahedron out of paper plates, cups, or plastic sheeting—and pack some geometry into your next picnic! MAKE's accompanying post provides step-by-step instructions for assembling icosahedra from picnic supplies. ...more>>

  24. Whistler Alley Mathematics - Paul Kunkel
    Kunkel's Geometer's Sketchpad lessons convey a conceptual understanding, usually without rigorous proof, with questions and suggestions for extensions: Buffon's Needle (an old probability exercise); Chinese Handcuffs (questions with applications for geometry, ...more>>

  25. Wholemovement - Bradford Hansen-Smith
    Bradford Hansen-Smith presents the art and geometry of folding circles. As he explains, "Everything we know about geometry, mathematics, and all spatial arrangement and organization of matter is demonstrated by cutting into the wholeness of the sphere. ...more>>

  26. Wild About Math! - Sol Lederman
    Math posts, which date back to October, 2007, have included "10 ways to get wild about Math," "How to square large numbers quickly (part 1)," "26 tips for using learning styles to help your kids with Math," "The algebra of cross-multiplication," "Flexagon ...more>>

  27. window into a math classroom - Sadie Estrella
    A snapshot-driven blog subtitled "a glimpse into a math classroom once a day." Estrella's posts, enlivened with pictures of her students and of their work on classroom dry-erase whiteboards, have included "Trying Math Meta-Cognition," "More Arguing about ...more>>

  28. Worksheet Works - WorksheetWorks.com
    This site generates high quality PDFs of worksheets with the flick of a few checkboxes. Just specify level of difficulty, range of numbers, font size, or other parameters. ...more>>

  29. The World of Geometric Toy - Akira Nishihara
    Play with animations and applets of Buckminster Fuller's Tensegrity and the Indian Ball (also known as the flexi-sphere), as well as wire-frame renderings of the torus, the magic ring, the toroflux, the reversible polyhedron, and other objects. Nishihira ...more>>

  30. Y-Math Mathematical Models - Jan de Koning
    Models and building boxes for education include magnetically connectable "mathmaker" and "polylinks," and tetrahedron puzzles. Other polyhedral furniture and housewares include cube money-boxes of plywood, copper, and brass; dodecahedron bottle openers; ...more>>

  31. You Can Do The Rubik's Cube - Rubik's, Seven Towns Ltd.
    The You CAN Do the Rubik's Cube Solution Kit offers teachers lesson plans, homework sheets, and answer keys aligned to national standards as well as 19 state frameworks, anchors and 21st Century Skills. Lessons and activities support Geometry, Algebra ...more>>

  32. Zome: Truncated 120-cell - PCMI @ Math Forum: SSTP 2007
    One of the activities at the 2007 Secondary School Teachers Program in the Park City Mathematics Institute was the construction of a truncated 120-cell using Zometool. View both an explanation of the mathematics and photos of the construction. ...more>>


 
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