1. Pyramids and their properties
http://www.asset.asu.edu/new/mathactive/lessons/79/interface.swf
2. Learn more about pyramids
http://www.asset.asu.edu/new/mathactive/lessons/168/Version002.swf
3. Build a pyramid
http://www.asset.asu.edu/new/mathactive/lessons/55/interface.swf
4. Surface area of a pyramid
http://www.asset.asu.edu/new/mathactive/lessons/258/interface.swf
5. the relationship between the volume of a rectangular prism and the volume of a rectangular pyramid
6. Volume of a pyramid
http://www.asset.asu.edu/new/mathactive/lessons/251/interface.swf