This transformed Chinese puzzle is an addictive game that "wires" kids' brains by developing skills needed for architecture, engineering and artistic endeavors. Three skill levels progress from basic spatial reasoning to complex problem-solving. The abundant Lauri Crepe Rubber shapes have different colors on front and back, providing colorful design options. Large triangle is 6-1/4" wide. * 22 progressively challenging patterns * 20 BIG rubber shapes (2 tangrams and more) * Solution card * Suggested activities * Carrying case for neat storage.