PBS
Pbs Kids: Science Rocks: Air Lift
Through this experiment, students are challenged to lift a book (and other items) with just air. Requires simple household items, gallon-size, zipper-lock plastic bag, book, pencil, drinking straw, and tape.
Science Museum of Minnesota
Science Museum of Minnesota: Air Cluster
Interesting site with links to activities about wind and air in many forms. Browse the different activities and investigations on the properties of air on the toolbar to the left of the page.
Science and Mathematics Initiative for Learning Enhancement (SMILE)
Smile: Air Pressure Demonstrations
Various demonstrations from the Illinois Institute of Technology of air pressure that can be used as an introduction to a chapter or unit on weather or air. Great examples for visual learners.
Science and Mathematics Initiative for Learning Enhancement (SMILE)
Smile: Does Air Really Exist?
Given a teacher demonstration and various learning stations, the students learn that air is a real substance which occupies space, exerts pressure, and has weight.