This project originated with the desire to offer general biology students a laboratory experience which emphasizes scientific thinking rather than a review of lecture content. To create investigative laboratories without many of the practical problems of their implementation, this project uses a combination of "methods modules" for wetlabs and FISHFARM, a computer simulation of a commercial aquaculture enterprise. FISHFARM served as an introduction to the process of scientific inquiry and data analysis. In the wetlabs part of the course, students designed and carried out experiments using traditional "bench" science. Methods modules were used to help students develop the necessary skills. These modules used videotapes to demonstrate procedures. The program was evaluated on four aspects of student achievement: lecture exam scores, process skills, opinions on the nature of science, and writing ability. There were no differences between students in this experimental group when compared to a control group. Data on student opinion was also collected and showed positive views for the approach. The following topics are found in the appendix: list of methods module videotapes; summer schedule for investigative labs; database summary of student projects; process skills and nature of science test; and student opinion data. (PR)