Three interactive computer-assisted learning programs are described. The use of tissues from freshly killed frogs is simulated, including the isolated sciatic nerve, the sciatic nerve-gastrocnemius muscle, and the in situ heart. (KR)

Relevant information concerning bee stings is provided. Possible reactions to a bee sting and their symptoms, components of bee venom, diagnosis of hypersensitivity, and bee sting prevention and treatment are topics of discussion. The possibility of bee stings occurring during field trips and the required precautions are discussed. (KR)

A tissue culture experiment that does not require elaborate equipment and that can be used to teach sterile technique, the principles of animal cell line maintenance, and the concept of cell growth curves is described. The differences between cancerous and normal cells can be highlighted. The procedure is included. (KR)

Activities that use dandelions to show the phenomena of geotropism and autotropism are described. Directions for collecting the stalks and observing the gravitropic response are included. The topics of lag time and bending rates, autotropism, growth rate changes, presentation time, and gravity detection are discussed. (KR)

Discusses the principles of magnetic levitation presented in the physics classroom and applied to transportation systems. Topics discussed include three classroom demonstrations to illustrate magnetic levitation, the concept of eddy currents, lift and drag forces on a moving magnet, magnetic levitation vehicles, levitation with permanent magnets…

This study examined the differences in middle school students' (n=287) perceptions of science activities among three instructional approaches: (1) lecture-worksheet; (2) traditional laboratory; and (3) problem solving. Chi-square analysis of questionnaire responses indicated that, on seven of the eight questions, students responded more positively…

Twenty-six junior high school students with learning disabilities studied two science units via an activity-based, inquiry-oriented approach or a textbook approach. Students performed higher on immediate and delayed unit tests when they had learned by the inquiry approach, and reported a preference for this approach. Vocabulary acquisition was…

Uses a projector, a prism, and two screens to demonstrate the composition of white light and detect color. (MDH)

Describes microfossils and explains how they can be collected from shale and limestone. Explains how to set up an interest corner in a classroom. (PR)

An assignment centered on reading journal articles and writing abstracts is an effective way to improve student reading and writing skills in sedimentology and stratigraphy laboratories. Each student reads two articles and writes informative abstracts from the author's point of view. (PR)

Presents two experiments in which students examine the effects of touching and shaking on plant growth in common bush beans. (MDH)

A third-semester physics course that covers the topics of atomic physics, the theory of relativity, and nuclear energy is described. Activities that include the phenomenon of radioactivity, field trips to a nuclear power plant, a simulation of a chain reaction, and comparing the size of atomic particles are presented. (KR)

The relationship between specific gravity, salinity, and density in brine solutions is investigated. Students construct hydrometers to reinforce concepts learned in oceanography. Background information, salt requirements for the unknowns, directions, and reproducible worksheets are included. (KR)

Evidence is offered that the Levels of Attainment in Science in Britain's National Curriculum will be achieved by only the top 20 percent of 14 and 16 year olds, rather than 50 percent as planned. New teaching skills are presented as ways to alter this prediction. Success in improving standards is demonstrated in three examples. (Author/KR)

Three rationales are provided for the ideal laboratory facilities needed to teach a technology education course. The equipment and types of activities needed to enhance learning are described. A model that represents the various technologies that make up the components of technology education laboratories is presented. (KR)