Students learn about the terminology and formulas associated with an icosahedron. The learning resource consists of definitions and an interactive spinning icosahedron.

Eight different polyhedra are given along with a challenge in this game. Can you arrange them so that their faces match in a chain? A solution is available to check your answers.

Predict which solid shape constructions would be unstable as shown at this one page website. Solutions are available right at the website.

A math challenge where geometry, measurement, and problem solving meet. Explore the properties of three dimensional shapes when you discover how six friends can equally divide a nine inch square chocolate cake. A one page activity from...

[Free Registration/Login Required] In this flipchart, students explore geometric sense by interacting with plane diagrams that create a three-dimensional shape.

This site is a personal site that discusses the popular polyhedron, the pyramid. It explains that by joining two pyramids you will get a dipyramid.

This site is a personal site that discusses the popular polyhedron, the pyramid. It explains that by joining two pyramids you will get a dipyramid.

This lesson describes three dimensional shapes and provides two interactive practice activities.

Here you can find a definition for the mathmatical term 'net', in addition to a couple of examples.

This site from Dr. Math and the Math Forum provides several links to pictures of icosahedrons. The information is somewhat brief, but worth checking out for a background on the subject.