The focus of the Association for Biology Laboratory Education (ABLE) is to improve the undergraduate biology laboratory experience by promoting the development and dissemination of interesting, innovative, and reliable laboratory exercises. This proceedings volume contains 10 papers: "Testing Issues of Foraging and Flocking Behavior" (C. C. Smith); "Studies in Protozoan Population Ecology" (J. C. Glase & M. C. Zimmerman); "Responses by Stomata on Leaves to Microenvironmental Conditions" (C. A. Brewer); "The Struggle for Existence: Competition Between Bacterial Stains" (B. A. D. Nichols, L. B. Cholewiak, & R. Condit); "The Effects of Cattle Grazing on Vegetation in a Shortgrass Prairie Ecosystem" (K. L. Driese & N. L. Stanton); "Enzyme Investigations for Introductory Courses" (R. B. Pitkin); "Stream and Pond Field Trip" (F. J. Rahel); "Organelle Isolation and Marker Enzyme Assay" (H. Padh); "The Use of Fossils in Interpreting Past Environments" (B. H. Breithaupt); and "Developing Customized Instructional Software" (M. Parker). Appendices contain additional mini-workshops and ABLE membership list. (MKR)