Describes an experiment to investigate chemical changes, pH, dissolved oxygen content, light intensity, and temperature in water containing aquatic plants. (MKR)

Presents an exercise that gives students a real feeling for experimental errors and demonstrates the importance of frequent repetition and averaging. (JRH)

Discusses the perceived importance of practical components in natural science undergraduate programs in distance and residential universities in the Netherlands. Surveys of faculty responsible for undergraduate practicals rated general and specific learning objectives. (Contains 26 references.) (SLW)

A discussion of clinical trials in the pharmaceutical industry describes typical processes and administrative issues, then presents a case in which a foreign pharmaceutical company negotiated with a university for sponsorship of a multicenter clinical trial of a new drug therapy. Problems and important considerations in clinical trials are…

Suggests that technical education programs can be made more appealing to academically capable students through the introduction of research and experimentation programs. (JOW)

The Latent Semantic Indexing and MatchPlus systems examine similar contexts in which words appear and create representational models that capture the similarity of meaning of terms and then use the representation for retrieval. Text Retrieval Conference experiments using these systems demonstrate the computational feasibility of using…

Describes the activities of the kNights of Physics, a group of preservice teachers, whose goal is to spread the knowledge of the fun of physics to elementary students and their parents. (JRH)

Describes a system that demonstrates how a color may be generated and specified in mathematical terms. Illustrates the mixing of primary colors as well as the concepts of saturation, luminance, and illumination. (JRH)

Determined if college students learn better when using lecture/CAI than by using the conventional lecture method to present visually oriented material. Results indicated no significant difference between the test groups in amount of learning; also, it took longer to present examples to the control group than for the treatment group to absorb…

In four experiments, college students acting as teachers to a simulated class of six students adopted a policy to balance achievement means and variances, allocating about 50 percent of the time to group instruction and the remainder to individual instruction. Results indicate that simulations can help teachers improve instructional decision…

Describes demonstrations to (1) construct an inexpensive static electricity detector; (2) obtain an abundant supply of either negative or positive charge using household items; and (3) create static electricity using a Tesla coil or Van de Graaff generator. (MDH)

Uses the context of sports surfaces to discuss the qualities of a surface that will produce a shock-absorbing effect. Discusses experiments to measure the shock-absorbing properties from two theoretical perspectives. Describes necessary equipment for the experiments. (MDH)

Discusses the energy flux-density of two beams of light of equal energy that are intersected at a given angle. Examines an apparent contradiction to the physics law of conservation of energy known as Vavilov's paradox. (MDH)