Describes an exercise which uses a computer program (written for Commodore 64 microcomputers) that accepts data obtained from identifying bacteria, calculates similarity coefficients, and performs single linkage cluster analysis. Includes a program for simulating bacterial cultures for students who should not handle pathogenic microorganisms. (JN)

Describes a simulation exercise for the teaching of taxonomy which involves studying drawings of members of an imaginary phylum. The use of this material can lead to an understanding of relationships, classification, taxonomic strategies, polymorphism, variation, and evolution. (Author/GS)

Discusses the use of games in the classroom. Describes two games involving the identification of Australian animals including complete instructions and rules for each game. (DS)

Presents a computer game which assists in learning the classification of igneous rocks and a simulation program which illustrates some aspects of igneous textures. (SL)