National Council of Teachers of Mathematics
The Math Forum: Suzanne's Mathematics Lessons 2001
This site by Suzanne Alejandre offers lesson plans, activities and resources covering topics in algebra, geometry, data analysis, number & operations, and measurement. The contents of this site are aligned with the NCTM standards and...
University of South Florida
Fcat: Two for One Box Company: Teacher Notes
At this site students use proportions to explore how volume is effected by dimension changes. This hands-on activity can be done individually or in pairs.
McGraw Hill
Glencoe Online Study Tools: Volume of Cylinders
This is a great place to practice using the formula for finding the volume of a cylinder. A hint is available as well as the correct answer for each problem.