File folders can be used effectively to develop and retrieve information about animal classification systems. Animal characters are drawn separately on the front side of a file cover and holes are punched next to each character. (PS)

Presents a science activity in which students simulate increases and decreases in frog populations to get a better understanding of different environmental issues affecting animal populations. Includes simulations for both natural frog populations as well as populations affected by human activities. (YDS)

Guinea pigs are presented as versatile classroom animals. Suggestions for animal behavior and genetics studies are given. Also included is information concerning sex determination and the breeding of guinea pigs, and hints on keeping these animals in the classroom. References and illustrations complete the article. (MA)

In this insect morphology exercise, students study the external anatomy of the worker honeybee. The structures listed and illustrated are discussed in relation to their functions. A goal of the exercise is to establish the bee as a well-adapted, social insect. (MA)

This article describes how Robert LeBleu's interest in aquatic life developed and that today he owns a large hydroculture operation supplying research crayfish nationwide. Suggested laboratory experiments with crayfish are described, as well as information on additional studies, equipment needs, and tours of the hatchery. (MA)

Presents 2 activities for students aged 8-12 in which students determine (1) whether or not earthworms can see white light; and (2) how an earthworm moves without legs. (MDH)

Presents an activity to determine the identity of animals that owls ingest. Students dissect and examine the contents of "owl pellets" which are the indigestible parts of animals that are regurgitated after eating. Provides instructions for implementing and extending the activity. (MDH)

Summarizes how a group of teachers prepared a series of elementary-level inquiry experiences that focused on the study of land snails. Recommends and describes the K-W-L and Four Question inquiry strategies for younger and older students respectively. (WRM)

Describes an activity in which students use metric measurements to find length and mass, calculate the towing strength of a bess beetle, and compare animal adaptations with human adaptations. (WRM)

Describes an activity to help students understand how feathers help insulate a bird's body. (WRM)

Discussed are the advantages and processes of making collections with children. An activity for making a classroom collection (herbarium folios) is described and includes materials and procedures. The processes of collecting and classifying are stressed. (CW)