Describes the circumstances of the total and partial solar eclipse of March 7, 1970 in certain American cities. Also discussed are (1) a classroom demonstration of the cause of solar eclipses, (2) techniques for safely observing the eclipse, and (3) what to observe during the eclipse. Bibliography. (LC)

Reviews research into the composition and structure of cell membranes. Describes four experiments, suitable for high school students, on the role of lipids in regulating diffusion across cell boundaries. Gives purpose and procedures for each experiment, laboratory data sheets, and the results of classroom trials of the experiments. (EB)

Experimental design of packaging materials to withstand the impact of gravity by 5th grade students. (EJS)

Here are 10 activities guaranteed to enrich your science curriculum and to increase your students' interest in the world of insects. (Author)

Designed for elementary school teachers, this article describes the recent eruptions of Mt. St. Helens, provides basic information on volcanos, and gives instructions for making a model volcano in the classroom. Resource materials for students and teachers on volcanos are listed. (SJL)

Describes a very simple and effective method of DNA extraction from dried peas. Presents information on the Green Machine Science Education Center that promotes education in gene technology. (JRH)

Describes a science activity in which students calculate the percentage of sugar in chewing gum. (DKM)