Release and show how the film always tries to get smaller. Demonstrate the complex PVC shapes and discuss basic shapes. These constructions can be used to show how sides share surface area, as the students place their shapes into the soap and water solution to form bubbles. Allow time for clean-up. At the end of the day put the materials in module box, list any missing items, tape list to outside of box.
Spheres are the smallest way of holding all the air.
The film pushes on the air until it cannot push anymore. If you wet your fingers before touching the soap films, they will not break. Spread the tarp out to keep water off of the floor. This lesson plan reflects the latest changes made as a result of suggestions from teachers. Please continue to send us your ideas.