Teach Engineering
Aerogels in Action
Model an oil spill cleanup. An engaging engineering lesson has groups using aerogels to simulate an oil spill cleanup (vegetable oil in water). Along the way, they learn about nanotechnology and hydrophilia/hydrophobia.
PBS
Pbs Teachers: Hot Air Balloon Experiment
Explore how heat affects the density of air by building and flying a hot air balloon using large plastic bags and the hot air from an electric hairdryer.
University of Oregon
Welcome to the Pressure Chamber
This site has an online experiment for testing the ideal gas law.