Describes methods of collecting crayfish and maintaining them in the classroom. Also discusses reproduction and molting of crayfish. (MA)

Describes the care and maintenance of a freshwater aquarium in the classroom. Includes a chart indicating organisms, special uses, and care. (MA)

Describes the collection, care, and maintenance of protozoa by elementary school students. Techniques for collecting and observing them are given. (SA)

The classroom care and maintenance of terrestrial isopods is described. Includes illustrations of isopod external anatomy, a potato trap for collecting isopods, and a constructed habitat for raising isopods. (MA)

Describes how to grow duckweed in the classroom. Includes a classification key, illustrations of the plants, and activities for the care and study of duckweed. (MA)

Presents guidelines for the construction and maintenance of a life science culture center with mobile and stationary units. (CP)

Elodea is an attractive plant, well suited for classroom aquaria. This article describes the collection, care, and maintenance of this plant. (BB)

Describes different ways plastic containers can be recycled for use in the science classroom. Uses of clear, opaque, and translucent plastic products in the science classroom are described. (DS)

Describes the process of collecting and maintaining a culture of protozoa. Instructions are also given for constructing a micropipette for transfering small organisms. (SA)

Techniques are described for using living plants in the elementary science classroom including the germination and planting of seeds, transplanting seedlings, vegetative propagation, stem and leaf cuttings, and other plant studies. (DS)

A science and social studies unit developed around rosin is described. Students develop an understanding of the processing of raw material from a plant source into a commercial product and how to protect wood from weathering by preparing, testing, and evaluating varnish and shellac for their wood protective qualities. (Author/DS)

Described is a method for bringing the sea into the classroom by setting up a saltwater aquarium. Included is selection of an aquarium, filtering systems, water (whether natural salt or synthetic sea salts), bottom materials, setting up an aquarium, system stabilization, stocking an aquarium, and maintenance of the aquarium. (DS)