Simon Fraser University
Chem1 Virtual Textbook: The Measure of Matter
This site examines the specific difference between mass and weight in addition to length, temperature, and time.
E-learning for Kids
E Learning for Kids: Math: Market Place: Mass
On this interactive site students learn to use various units of mass to solve problems and put objects in order by their mass.
Centers for Disease Control and Prevention
Centers for Disease Control: Childhood Obesity
The concern over obesity in children in the United States is staggering. This site provides research and statistics along with suggesting ways to change the epidemic. Includes video.