This lab is a great activity for students to practice finding the volume of rectangular prisms. Some prisms are cubes. Some cubes have fractional side lengths. Students are required to write numerical expressions for the various formulas: length x width x height, Area of the base x height, and side cubed if the prism is a cube. This activity targets CCSS 6 EE.A.2c as well as CCSS 6 G A2.