The history of aerodynamics is rich with experimentation and international collaboration. Author Joyce Bryant relays this dynamic past and provides math word problems using the formula of lift, the force that makes airplanes fly. She...

Fourth graders discover earth's air pressure through observation of several experiments. In the "Experiment of the Leaky Bottle," they observe how air pressure forces water out of the lowest hole farther than the holes above it. In...

Fourth graders observe demonstrations how heated air rises and becomes a low pressure area. After watching several teacher-conducted experiments, 4th graders, in groups, discuss and answer questions in their journals. Finally, they...

Great animations showing how sound is produced.