Discusses the atmosphere, the lithosphere, and the hydrosphere and how each of these affects the life of man and how man affects them. Of particular concern is the effect of each upon the weather. The author concludes that there is infinite variety in the earth's scenery, yet there is unit within this diversity; there is constant change; and there…

Addresses concepts about electrochemical systems that cause confusion among those new to the subject. The goal is to synthesize an understanding of the heterogeneity of an electrochemical system and a chemical sense for the important electrochemical variables of potential, current, and charge. (JN)

Provides an exercise to help students understand how small atoms are. Also provides a problem to help beginning college students understand the concepts of unit conversions. (JN)

Eighth-grade pupils in Nigeria were studied to find out: (1) the extent to which students exposed to the Nigerian Integrated Science Project mastered some fundamental concepts; (2) whether there were significant differences in achievement at various cognitive levels; and (3) which of the concepts was most easily mastered. (Author/BW)

Summarizes the views of Ernst Mayr on the controversy over evolution which exists between physical scientists and biologists. Discusses the uniqueness of individuals, work by population geneticists and mathematical geneticists, complexity in nature, rates of change, modes of change, and the need to ask "why". (DC)

Lists resources on black holes, including: (1) articles of historical interest; (2) books and journal articles on elementary expositions; (3) elementary and advanced textbooks; and (4) research articles on analytic structure of black holes, black hole dynamics, and astrophysical processes. (SK)

To develop scientific thinking in students, the history of science should be integrated in school curricula. This would present conflicting theories, within and outside of science, that would help to develop the students' abilities to compare and criticize. (CJ)

This study concerns the role of structural properties of scientific prose: description of relations and explanation of mechanisms. The latter is isolated as a characteristics related to creative problem solving. (Author/GK)

Sixty fifth-grade students were randomly assigned to a group to be trained in solving Inhelder and Piaget's pendulum problem by Siegler's method or to a control group. A significant training effect was found. A weak transfer effect was found, but delayed performance showed no training effect. (Author/BW)

Presents the outline of an approach related to the teaching of the chapter on bound and scattering states in a short-range potential, which forms a standard part of an undergraduate quantum mechanics course or nuclear physics course. (HM)