Describes activities for the elementary school classroom to increase observational accuracy of children. (CP)

Describes how to modify an electroscope so the charge can not leak out. (LS)

Suggests that snow ecology be added to the high school curriculum and center around winter abiotic factors and biotic components, winter survival, case studies, winter research and arctic ecology. (LS)

Describes an educational TV series, broadcast in Pennsylvania, called Science for the Seventies (SFTS), which presents science lessons for the elementary level. Each lesson consists of objectives, background information, an equipment list, and four or five related science activities. (MLH)

Describes five ways for harnessing solar energy and lists references containing suggestions for classroom experimentation. (LS)

Describes thin-layer chromatography experiments in which the students separate natural products, such as paprika, chile powder, and peppers. (MLH)

Describes an undergraduate chemistry experiment in which an atomic absorption spectrophotometer is used for recording flame emission spectra of the diatomic carbon molecule. (MLH)

Presents a series of activities intended to enable teachers to determine if children are ready to be introduced to the concept of speed. Reviews Piaget's theories and the empirical evidence on which the sequence is based. (Author/CP)

Describes the apparatus and applications of a solar energy study kit suitable for school and college use. (LS)

Describes a chemical method for preparing leaf skeletons for scientific or artistic work. (LS)

Suggests that Experiment 13.2 (c) of the Nuffield 0-Level Chemistry Course be banned since the oxidation of lithium under very humid conditions can cause an explosion. (LS)

Describes various elementary school activities using a loaf of raisin bread to promote inquiry skills. Activities include estimating the number of raisins in the loaf by constructing histograms of the number of raisins in a slice. (MLH)

Discusses the fact that when the materials or interactions used as a basis for a science activity posses a high degree of familiarity, the student may rely on past experience rather than on gathering data to use in making judgments. In such cases, a simple request for observed evidence should be made. (MLH)