A complete introduction to the mathematical theory of Origami based on the teachings of Freidrich Froebel (1782-1852) and a step-by-step guide to 33 colourful and fun paper folding projects which are in themselves 3-dimensional proofs of geometric principals: - Spiral - Star - Octagon - Pentagon - Hexagon - Heptagon - Pyramid - - 16-, 17-, 18- and 24- sided polygons - Super Tangram - Polyhedron - - Tetrahedron - Octahedron - Icosahedron - Dodecahedron - Creating these projects is a little like solving a puzzle. Learn a lot of interesting facts about angles when you construct a pinwheel, a crow's head and a plot of grass, for example, and discover how you can use an origami square to fashion as large a hexagon as possible. * Artistic! Bring geometry and art together when you fold these beautiful origami shapes. * Educational! While you're making these remarkable designs, you also learn about the mathematics behind the folds & have fun with geometry.