Describes an experiment, easily repeated in the classroom, designed to determine whether members of the species Drosophila melanogaster show selective preference in choice of mates. (PEB)

Describes some uses of pocket-size electronic calculators in biology classes; for example, charting exponential population curves, evolution by natural selection, and random genetic drift. (PEB)

Describes an experimental "accident" that resulted in much student learning, seeks help in the identification of nematodes, and suggests biology teachers introduce similar accidents into their teaching to stimulate student interest. (PEB)

Provides a condensed report of a study of variables related to conservation knowledge. (PEB)

Presents one individual's view concerning individuals who encourage the use of "natural foods" and "organic living." (PEB)

A number of activities are described by which a class can collect biological data about the students in the class. Brief instructions are given. (RH)

Described is the production of a simple 30-minute super 8-mm film as a joint student-teacher effort. The film was a study of the ecology of the Santa Ana River. (RH)

Described are projects and observations that can be conducted with the laboratory mouse to study mammalian growth and development. (RH)

Describes procedures and materials for preparing microscope slides. Comments on selection and proper care of slides are also included. (RH)

Describes activities that can be done to study insect ecology by use of the galls of goldenrod plants. (RH)