Table of Contents
Introduction ................................................................ 1 Exploration.................................................................. 5 Description Of The Geoboards..................................... 7 Example Of Use ..........................................................11 The 25-Pin Lattice Geoboard...................................... 19 Parallelograms .......................................................................19 Area ....................................................................................... 26 Pythogoras’ Theorem............................................................ 29 Isosceles and Scalene Triangles ........................................... 38 Lesson With Polygon Boards ..................................... 53 The Regular Pentagon .......................................................... 53 The Regular Hexagon, Octagon and Dodecagon ................. 54 The Circle .............................................................................. 56 More Systematic Work ......................................................... 62 Animated Geometry Films ....................................................67