This resource is a must have for any educational environment teaching children about geometry and 3D shapes. This set comes with 8 different shapes, including: a sphere, cube, triangular prism, square based prism, cylinder, cone, triangular based pyramid, and square based pyramid. Each shape is supplied in 4 different colours and is made of long-lasting FSC® certified Beech Wood, adding an extra layer of sensory experience to your open-ended play. Triangular prism measures 1.3" x 2.9" (3.5 x 5 cm). 32 total pieces. Ages 3 and up.