Tangram is a popular put-together puzzle. The object of the game is to form a given shape using all seven pieces (tans). Tangram is widely used when teaching spatial concepts in geometry. Tangram develops logical thinking and spatial imagination, and it is a great game for coffee breaks. Tangram by Gemini Puzzles Software has a large collection of 1000 best Tangram puzzles. Even if you have not played put-together puzzles, try the free Tangram demo. You will see the beauty of Tangram. The program displays help hints for all interface elements in window status bar. The full version of Tangram also has all puzzles and solutions in PDF format to print out.