Learning Advantage - Polydron Revolution Maxi Tub Educational Aim: A vital aid to the teaching of the principles of gears and pulleys. The Polydron Revolution Sets fit comfortably into the world of Polydron and Frameworks, by being completely interactive with all existing ranges in the Polydron family. They are either an ideal addition to any classroom already reaping the rewards of using these products, or an excellent introduction to the world of creative construction. Product/Package Contents Include: 8 axle mounts, 6 stub axles, 2 handles, 2 small gears, 3 medium gears, 2 large gears, 2 struts, 1 connector, 16 Frameworks equilateral triangles, 20 Frameworks squares, 10 Frameworks rectangles, 1 triangle peg, 1 square peg, 10 squares, 4 large equilateral triangles, 1 hexagon with hole, 1 octogon with hole and Exploring Revolution booklet packaged in a plastic storage pail. Players: 2+ Ages 5+.