This is an unusually large sized designed for when durability and ruggedness are important, such as in a school or hands-on museum application. It measures about 9 3/8" across the frame and the pieces are about .9" thick hardwood.
Tangrams are among the most versatile of puzzles (along with Soma Cubes). The 7 piece square is very old in design and was extremely popular around the world for the first have of the 19th century, mostly with adults though the appeal is now to both adults and kids. It is a common item in schools. Tangrams will make many many shapes beyond the square. Our 2 instruction sheets provide 72 different shapes that you can make, each of which requires all 7 pieces. Books are available (Jerry Slocums Tangram book is outstanding and is avail at major bookstores) which will provide you 2000+ shapes to make.