TeachEngineering
Teach Engineering: Things That Matter to Flocculants
Prior to reaching households, water is exposed to a variety of treatments designed to render it fit for human consumption and use. One of the first treatment steps is the removal of suspended solids using chemical additives called...
Other
Oresome Resources: Mining Helps Make Your House Interactive
An interactive activity for you to find out how much your lifestyle depends on mining. Students select household items and learn facts about their chemical nature, properties and uses, their origins in the Earth, mining, and production.
US Environmental Protection Agency
Epa: Assessing Health Risks From Pesticides
This site provides information about the active ingredients registered as pesticides. Site discusses toxicology, exposure, dose-response and risk characterization.