Learners can observe the biochemical reactions in cells through investigatins of the reactin rates of enzymes when temperature, pH and enzyme concentrations are varied. Enough materials are included for 30 children to perform these experiments, working in pairs. Includes: reproducible student worksheets and complete instructins. Includes MSDS. Grades 7-12. Shipped directly from the manufacturer. Not available with rush shipping. Delivery time estimated at 10-14 days or less. Gift wrap not available. Information on how to place your order by fax or by telephone. Product Number AAREH1