Qtoys | Double Tangram Puzzle SetInvented in China approximately 200 years ago, the Tangram is a two dimensional re arrangement puzzle, created by cutting a square into seven pieces seven geometric shapes called tans. This double tangram contains one coloured set and one natural set, offering even more fun and open ended building options for children. Contained in a wooden tray for easy storage, a booklet showing how to create different pictures is also included. These sets are great