hand2mind Plastic Fillable 3D Shapes, Clear Geometric Solids for Measuring Volume (Set of 6)
This large plastic geometric set is a great hands-on tool to demonstrate that different geometric solids can have equal volumes. This set contains 6 clear solids which include: cone, sphere, cylinder, pyramid, cube, and rectangular prism. Shapes can be filled with liquid, sand, or other dry-fill material.