This product is a puzzle that allows you to visually understand the Pythagorean theorem, a fundamental theorem in mathematics, while having fun. It comes with a special tray featuring square areas corresponding to the three sides of a right triangle, and a set of beautiful, glossy pearl-like beads. Product Features: Visual Proof of the Theorem: This puzzle corresponds to a right triangle with sides in the ratio of "3:4:5", demonstrating the theorem 3^2 + 4^2 = 5^2. A total of 25 beads can be perfectly moved from the two smaller squares (9 and 16 beads) to the larger square (25 beads).