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This trick from Exploratorium physicist Paul Doherty lets you add together the bounces of two balls and send one ball flying.

Design a vessel that tests the limits of wind power given a set of off the shelf and recycled materials.

This is an activity about reaction times. Just how quickly must an NHL goalie respond to save a shot, and how does your reaction time compare?

In this activity, learners explore the concept of valve operation and how engineers have adapted valves for use in mechanical heart valve design.

In this online activity, learners use a realistic mass and spring laboratory. They hang masses from springs and adjust the spring stiffness and damping.

In this fun and, at times, hilarious force and motion activity, learners will use household objects to build a crazy contraption and see how far they can get a tennis ball to move.

In this data analysis and environmental science activity, learners evaluate the feasibility of wave energy as a practical alternative energy source using ocean observing system (OOS) buoys.

In this indoor or outdoor demonstration, use a large and small ball to illustrate conservation of energy and momentum.