In this activity, students learn about the trade-off between speed and torque when designing gear ratios. The activity setup includes a LEGO pulley system with two independent gear sets and motors that spin two pulleys. Each pulley has...

Strength training isn't just for people wanting to develop larger muscles. This article discusses many of the benefits associated with weight training and how to determine your appropriate level of involvement. Links to related articles...

Use this site to learn about basic gas properties including motion, viscosity, and compressibility. Includes links to activities for all ages.