The inspiration for this assignment is quite simple...it is from a TV commercial. I have seen the commercials for laundry detergent that show grass stains on white clothes and then hear an announcer mention something about "enzyme action" of the detergent.
I thought why not try this out?! For this assignment students will design and run experiments to test the claims of detergents.
http://poster.4teachers.org/worksheet/view.php?id=125747
http://rubistar.4teachers.org/index.php?screen=ShowRubric&module=Rubistar&rubric_id=1639551&
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