BBC
Bbc Bitesize: Volume
Pick up some valuable pointers on how to figure out the volume of various shapes. When you finish working your way through the pages you can take an online "Test Bite" and check your understanding.
Oswego City School District
Regents Exam Prep Center: Prisms
What is a prism? Find a good definition and several example images, as well as formulas for finding the volume and surface area of a prism given measurements of its base and height.
McGraw Hill
Glencoe Mathematics: Online Study Tools: Volume of Prisms and Cylinders
This site gives a short interactive quiz which allows students to self-assess their understanding of the concept of finding the volume of prisms and cylinders.
Wolfram Research
Wolfram Math World: Prism
This MathWorld site defines many different types of prisms. It gives the formulas for the volume and area of a prism the site has many illustrations [Requires Java.]
National Council of Teachers of Mathematics
The Math Forum: Ask Dr. Math: A Rectangular Prism
This question and answer site discusses whether it is possible to have a retangular prism that has a volume greater than its surface area.
National Council of Teachers of Mathematics
The Math Forum: Ask Dr. Math Faq, Prism Formulas
This site defines what a prism is and gives formulas for surface area and volume. Contains related links.