Archimedes' Tangram Puzzle
Give your brain a boost with this mental workout that dates back to more than 2\,000 years ago. Based on the tangram created by Greek mathematician Archimedes of Syracuse\ this geometrical brainteaser is thought to be the world's oldest puzzle. Solve this ancient riddle by fitting the 14 polygons back into the wooden frame\ and don't stop until your done—otherwise\ what are you going to do with that random leftover triangle piece?"
Recommended for ages 12 and up. Includes booklet of 12 additional shape-building challenges.