This lab is completely built on the work of Paula Donham, Olathe East High School, Kansas. A series of experiments using blackworms and treatments with stimulants and depressants to measure changes in heart rate. This lab is used to teach students the scientific method. I start this on Day 1 of my course and spend a full week on it, so we get this protocol and understanding solid from the beginning of the year.

• My version of the lab.
• Paula Donham's Student version of the lab. Teacher version is in Teachers Vault.
• Background for the lab from Dept of Biology, University of Dayton, Ohio.
• Detail on how to draw box plots.
• Charlie Drewes' Web site -- the ultimate source for invertebrate studies.