Features
- Material: Copper + Iron + Aluminum + Wood.
- Size: 4.80X4.80X2.60cm/ 1.89X1.89X1.02inch.
- 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 between the mass and the buoyant density of object.It can promote kids ability of cognizance, potential creativity, imagination.