In 2 experiments we examined the role of (a) specificity, (b) the type of targeted learning activities, and (c) learners' prior knowledge for the effects of relevance instructions on learning from instructional explanations. In Experiment 1, we recruited novices regarding the topic of atomic structure (N = 80) and found that "specific"…

Describes the general features of the feedback classroom, and its uses in the teaching of Physics. Circuit diagrams for the construction of control and response units are presented. The use of these units in evaluating student achievement is described. (LC)

Describes three student experiments in magnetohydrodynamics (MHD). In these experiments, it was found that the electrical conductivity of the local water supply was sufficient to demonstrate effectively some of the features of MHD flowmeters, generators, and pumps. (LC)

Reviews the techniques used by Rutherford in his experiments on thorium, and suggests ways for repeating and re-examining the experiments by capable sixth-form physics students. (LC)

States that the educational mission of instruction in natural science is still not clearly defined. Explains that the unclear mission is revealed by the situation in instruction in physics today as well as by the scholastic achievement in this field. (CMK)

Explains the reasons for low U.S. score results on the Third International Mathematics and Science Study (TIMSS) and compares them with students from other nations. Swedish high schools scored highest on the science test, which is attributed to their curriculum. Suggests that the majority of students are taught science that is irrelevant for their…