Describes a project centering around earthworm activity in a compost bin. Includes suggestions for exercises involving biological and conservation concepts, gardening skills, and dramatical presentations. (ML)

Provides directions for making a panda mask and a panda puppet. Also illustrates how to make pop-up cards of endangered species. Step-by-step procedures are indicated. (ML)

Introduces optical experiments and observations for an airplane passenger including scratches on a window, scattering of light, and reflection images. Provides several diagrams. (YP)

Introduces a 3-dimensional mechanical lattice with adjustable telescoping mechanisms. Discusses the crystalline state, the 14 Bravais lattices, operational principles of the mechanical lattice, construction methods, and demonstrations in classroom. Provides lattice diagrams, schemes of the lattice, and various pictures of the lattice. (YP)

Presented is a method of demonstrating the optical activity of glucose using an overhead projector and easily obtainable materials. Explores the difference between reflected and transmitted light (Tyndall Effect) using sodium thiosulfate, hydrochloric acid, and an overhead projector. (ML)

Describes three trace determinations of organic substances utilizing a spectrophotometer. Provides procedures and absorbance wavelengths for determining acetonitrile, oxalic acid, and oxalic acid in human serum. Explores the role of acetonitrile and oxalic acid as catalysts in their respective reactions. (ML)

Introduces several one- and two-mode vibrating systems for demonstrations. Provides some recommendations for designing the corridor apparatus. (YP)

Describes a three-week sequence to take undergraduate students through the study of enzyme kinetics in an integrated manner that reinforces the basic concepts of initial velocity and the effects of varying operational parameters. Discusses laboratory sessions and the use of a microcomputer in instruction. (CW)

Describes the nine modules of the SAVI/SELPH program, a hands-on, multisensory science program developed for grade 4-7 visually impaired, orthopedically disabled, learning disabled, deaf, and multihandicapped students. Modules consist of measurement, structures of life, scientific reasoning, communication, magnetism and electricity, mixtures and…

Describes the life cycle and requirements of midges. Discusses larval substrate preferences, swimming behavior and distribution, developmental rates, temperature tolerances, egg hatching, swarming flights of adults, species composition within a sampling site, and developing a reference collection by rearing larvae. (CW)

Presents two views about lenses and optics in attempt to clarify a story written by Carolyn Hermann, "Through the Magnifying Glass." Cites two references for additional reading on students' optics difficulties. (RT)

Presents experiments using wild birds as predators and pastry as prey and colored stones as background to demonstrate natural selection. Describes the exercise as an exercise in simulating natural selection. (Author/CW)

Described is a game especially for senior economic geology students. The game challenges them to test their skills under present market conditions in an area of high consumer risk. Discussed are preparation and management of a portfolio, conducting research on various mining companies, and final accounting for results achieved in light of…

Discusses some of the problems encountered in teaching electronics in British secondary schools with regard to understanding certain concepts. Describes some ways of teaching the concept of potential in a secondary electronics course. (TW)

Discusses the possibilities of toxins present in medicinal herbs. Describes an experiment in which toxic constituents can be selectively detected by thin-layer chromatography and NMR spectroscopy. (TW)