Brings an important issue into the classroom as students study the physiological aspects of drugs * By using a culture of Daphnia, learners see commonly used drugs and observe changes in the circulatory and nervous system of the organism * Enough materials are provided for 30 students working in pairs * Kit includes: Ringer's solution, drugs such as: adrenaline, lactic acid, aspirin, caffeine, nicotine, and ethyl alcohol and chambers * Reproducible student worksheets * Teacher's Guide * For Grades 6-12