The standard method of completing a chapter is to have the student review 3 ways: Cooperative review questions from text; MindJogger Game DVD from text with winning team participants receiving 5 Extra Credit points; BrainPops subject specific game on Internet.
Students will work in groups of two to measure pH of freshwater system when crayfish are present in water sample. A control will be set-up and the biology of the crayfish will studied. The pH should increase as the crayfish releases ammonia as a waste product. (Ammonia is a base)