Description These physics experimental cube blocks is made of premium material, durable and practical to use. It can be helpful for students to do physics experiments. It can be used as kids teaching aid, help to develop intelligence and expanding thinking. Features - Color:Assorted Color. - Material:Copper + Iron + Aluminum + Wood. - Size:4.80X4.80X2.60cm/1.89X1.89X1.02inch. -Note: Randomcharacters position - Adopted premium material, which is durable, practical and long lasting - Put the cubes into the water separately and observe their suspension in the water - It used to determine the relationship betweenthe mass and the buoyant density of object - It can promote kid's ability of cognizance, potential creativity, imagination - Can be used as a great teaching tool to improve their cognition of physical mechanicsPackage listing: 1 Set x Cube Blocks