A tangram is a Chinese puzzle that includes 7 pieces: a parallelogram, a square, and 5 triangles. According to legend, during the Tang dynasty, an artist made a beautiful blue tile for a famous warlord. But he dropped the tile and it broke into the 7 pieces of a tangram! You can read about this story in "The Warlord's Puzzle" by Virginia Walton Pilegard.
At first the tangram puzzle was hard for me. But I practiced and I learned a trick: always try and find the 2 big triangles first. Now it's easier and more fun for me. I can solve all the puzzles without trouble!