We just love tangram... it can be quite easy or quite challenging, and it just provides a wonderful fun way to improve geometrical perception.
These are some of the shapes you can build...I have a book that boasts +6000 combinations, with the corresponding "solution", so it is a self correcting work that allows children to work independently... I am going to make some cards to share soon...
But let's start with the set itself.
I have a black plastic Tangram set, but my children each wanted their own, so made a very simple one with black construction paper that has been previously laminated.
You can basically use any material you want, from cereal boxes to wood, of any size you want. All you need to do is start with a square.
Draw a square of at least 8" x 8"