 Geoboards in the Classroom  Tom Scavo
A Web unit for teachers from Tom Scavo that offers suggestions for using geoboards to explore the length and area of twodimensional geometric figures. The Introduction includes pages that describe materials needed, offer discussion and activities for investigating length and area (in particular Pick's Theorem), and provide sample pages of dot paper to print out. Five lesson plans focus on lines, squares, rectangles, parallelograms, and right triangles, and a short bibliography rounds out the unit.
more>>
 Math Learning Center (MLC)  Gene Maier
A nonprofit Oregonbased educational organization that develops and publishes curriculum materials, provides continuing education for teachers, consults with educational agencies, and provides opportunities for parents and others to become knowledgeable about alternatives in mathematics education. Products and services include publications and teaching supplies (books, manipulatives). Materials are typically teaching guides designed for sensoryrich, highly interactive, textbookfree classroom settings, stressing visual thinking entailing the use of models, sketches and other graphic representations. Curricula include Bridges in Mathematics; Algebra Through Visual Patterns; Opening Eyes to Mathematics; Visual Math and Math Alive!; Number Corner; Box It or Bag It Mathematics; and Story Boxes. Conferences, seminars, and workshops are listed, and a searchable catalog is provided.
more>>
 Toys from Trash  Arvind Gupta
Stepbystep photographic instructions for building elegantly simple, colorful "Math Magic" doityourself manipulatives: Abacus, Flexagon, Triangle Grid, Flat Flexagon, Slipper Insets, Folding Pentagon, Tangram, Paper Octagon, Cylinder and Cone, Area of Triangle, Inset Puzzle, A4 to Pentagon, Clock Face Cut Cake, Triangle to Square, Triangle to Rectangle, NoGlue Cube, Roulette, Geoboard, Star Patterns, Soap Films, Soap Path, Paper Diamonds, Paper Cobweb, Circle to Ellipse, Fun Fractions, Square Box, TPuzzle, Plus Puzzle, Old Slipper Insets, Diameter of Refill, Square to Cylinder, Finger Multiplication, Broomstick Multiplication, Paper Protractor, Envelope Tetrahedron, Circle to Rectangle, Rectangle to Circle, Add Angles, Möbius Twist, Folding Parabola, Pythagoras Theorem, Bit by Bit (binary counting on your fingers), Prismatic Patterns, Which Holds More? and more. Some of these homemade constructions come with "one minute films" in English, Hindi, Malaysian, Marathi, Bangla, Tamil, Kannada, and other languages. Others feature PDFs to download for more detailed instructional prompts. See also Gupta's categories "Amazing Astronomy," "Pumps from the Dump," "Paper Fun," "Tipping Toppling Toys," "Motor and Generator," "Electricity and Magnetism," "Newton Unplugged," "Fun with Pressure," "Fun with Light," "Simple Sounds," "Strong Structures," "Flying Toys," "Force Fun," "Spinning Toys," "Air and Water," and "String Games." Gupta has won recognition from the Indian National Science Academy (Indira Gandhi Award for Science Popularisation), the Council of Science Education International (Mary McCurdy Award), and the National Association for the Blind among many other awards.
more>>
 
