Students should work in pairs because they will work together to create the objects and in filling the objects with popcorn. Pass out the Popcorn Prisms Anyone? activity sheet, a piece of white paper, a piece of colored paper, tape, and a ruler to each pair of students. It is helpful to spend time showing students some model rectangular prisms, reviewing the volume formula, demonstrating the prism construction. Popcorn should not be used for the demonstration, but students should be able to see how the prisms fit inside of each other.