Describes a technique for isolating slime molds from tree bark and outlines projects for working with slime molds in the laboratory. Diagrams of 26 of the more common British species and a key to the Orders of Myxomcetes are given. (CS)

Investigated were children's reactions when allowed to choose their own apparatus and perform experiments with appropriate directions available. Few students invented their own experiments; most followed the available printed instructions. (SL)

Explains the laboratory techniques and equipment necessary for the demonstrations. (CP)

Describes air observation activity in which human fingerprints are investigated. Includes diagrams of various fingerprint types and the characteristics of various fingerprint ridge types. (SL)

Numerous examples of devices designed by primary school children are provided. The instructional methodology and classroom setting are also described. (CP)

Describes the distinctive features of the common snapping turtle. Discusses facts and misconceptions held about the turtle. Provides guidelines for proper care and treatment of a young snapper in a classroom environment. (ML)

Describes an approach to teaching engineering design that involves analyzing, designing, building, and testing a simple structure. Explains the procedures for the various activities and discusses how the design concept can be incorporated into other courses. (ML)

Describes a procedure for teaching the "generator orbital" (GO) approach of molecular orbital bonding in polyatomic molecules. Explains how the GO can be utilized with students in generating the vibrational, rotational, and translational modes of molecules in a completely pictorial manner. (ML)

Explains the use of a convex lens as a thick mirror. Shows the expression for the power of this type mirror. (YP)

Offers suggestions for spring activities focusing on plant reproduction both indoors and outdoors. Suggests planting seeds to observe, measure, and record effects of temperature, moisture, fertilizer. Recommends outdoor study of the horsetail plant. (NEC)

Outlines six soil and water investigations that students can pursue outdoors, in nature centers, or in classrooms: soil characteristics; relationship between soil ph and plant life; what aggregates tell us; differences in soil structure; differences in rate of water absorption by soil; and soil exploration with a Berlesi funnel. (NEC)

Describes the habitats and life cycles of newts. Provides tips on collecting and caring for newts, along with suggestions for observational lessons related to the collection, study, and release of these organisms. (TW)

This section of the journal includes several short notes on science activities and materials for secondary schools. Activities and materials are included that relate to biology, microbiology, microcomputers, chemistry, and physics. (RH)

Illustrates the 18 steps to the development of a model of a coordination polyhedron that represents the cubic closest-packed structure. Uses a sealed, empty envelope in developing the model in teaching about stereochemistry. (TW)

Explains two activities: (1) a "rotator demonstration" (a turntable, pendulum, chalk, and other materials), which can be used in many activities to demonstrate rotational concepts; and (2) an "Eskimo yo-yo," consisting of two balls (plus long strings and a glass tube) which rotate in opposite directions to show centripetal force. (JN)