Twelfth graders describe at least two of the main causes of machine accidents. Possible responses: Unauthorized persons doing maintenance or using the machines. Missing or loose machine guards. List three of the requirements for...

Students investigate "indicator" (Bromothymol Blue or BTB) to test for the presence of certain chemicals in liquids and gases. They compare distilled water and seltzer water for presence of carbon dioxide.

High schoolers investigate why doctors feel torn between patients and insurance companies. They examine the health care system and how it affects patients. They discuss one's ability to afford health insurance as well.