A balloon in a bottle, building a lung and bubbles? Explore the positive properties of air, namely gases take up space, that they take the shape of the space that they are in, that its effects are visible on solids and liquids, and that matter cannot occupy the same space.
STEM Challenge: build a spirometer to measure lung capacity.
Watch it now at video.wkar.org
Curiosity Guide #104 - Gases(PDF - Acrobat Reader recommended)
Ep. 104 first air 11/24/14