This basic set of wooden geometric solids includes 12 shapes. Understanding the differance between 2D and 3D shapes and their properties is made far easier when you have the shapes to hand. The geometric shapes can be used to help younger children recognise the shapes and explore them through  play . For older children having a set of shapes to hand is invaluable when working out volume、 angles、 nets、 circumfrence、 plane symmetry、 perimeters and other trickier math concepts. In addition to the 12 geometric solids this set also contains activity notes.