Two Hypercard stacks are reviewed including "Amino Acids," created to help students associate amino acid names with their structures, and "DNA Teacher," a tutorial on the structure and function of DNA. Availability, functions, hardware requirements, and general comments on these stacks are provided. (CW)

Describes three criteria for evaluating educational software; classification of software types, the presence or absence of process skills, and educational practices. This article provides background for a software evaluation form to appear in a subsequent issue. (CW)

Authors describe how to use videodisks and computer software in biology instruction. HyperCard Videodisc Toolkit for the Macintosh computer and the BioSci videodisc are used to explain basic principles in the preparation of multimedia presentations. Authors assert that the use of this technology enhances student learning by inserting excellent…

A computer program that simulates the random evolution of a metabolic pathway is given. The program shows that natural selection preserves favorable traits if they occur in a specific sequence. (KR)