Mass Cubes for Density Investigations - 9 PiecesExplore material properties, density, and scientific measurement with this 10 piece Mass Cubes for Density Investigations set. Each cube is made of a different material and identical in volume (2. 5cm per side), allowing students to compare mass and calculate density. This set supports inquiry based learning through weighing and water displacement activities and can also be used to introduce concepts such as specific heat and material classification.