Learning Resources Folding Geometric Shapes (Office Product)

I teach 7-8 grade math and love these foldable geometric shapes. My students quickly grasp the concept of a "net" and how to find the surface area of a polyedron. They also are perfect for demonstrating the relationship between the volume of a prism and a pyramid with the same base area and height. I show them that scooping up 3 pyramid fulls of beads can fill up the corresponding prism, hence V = BH/3.However, I recommend buying the EAI Education brand version instead. I've used both Learning Resources product and EAI's and found EAI's to be far superior. The plastic of EAI bends easier and fits better. And they color-coded the shapes to match up (corresponding pyramids are same color as corresponding prisms). Learning Resource colors don't have any particular logic to them. I couldn't find the EAI product on Amazon, so you'll probably have to go to their website. Search for "GeoModel EAI". I like the 10 cm size, although there are many options to choose from.