This Tangram Puzzle is fashioned after an ancient Chinese Puzzle made of five triangles, a square and a rhomboid which can be formed into thousands of silhouettes.  Waldorf teachers love it for teaching children spatial mathematics.  In the instruction book, there are images which one tries to make using the triangular pieces.  It comes as a 5" square with pieces cut from Maple, Walnut, Cherry and Poplar woods and comes with a cloth bag and an instruction booklet which includes solutions.  Made in the USA!