Describes examples of force in daily living. Discusses some examples of gravitational, internal, external, and centrifugal forces in various situations by using force vectors with diagrams. (YP)

Reviews several arguments deployed in favor of promoting the public understanding of science. Examines assumptions embodied in these arguments. An introductory discussion of scientific literacy is given and suggested as being a more appropriate goal because it provides more criteria for assessing the nature and understanding of science. (RT)

Discusses a questionnaire sent to 763 Society for College Science Teaching members to identify problems of teaching nonmajors. Notes the questionnaire had a high return rate. Lists the eight major problems: post negative experiences; motivation; what to teach; abstractions; how to introduce relevance; staying power; inquiry material; and…

Investigates specific strategies and activities used by two chemistry teachers to enhance student understanding of chemistry at the 11th- and 12fth-grade levels. Discusses teacher characteristics, class activities, classroom management, and monitoring for understanding. (YP)

Discusses some historically important reference systems including those by Newton, Leibniz, and Galileo. Provides models illustrating space-time relationship of the reference systems. Describes building models. (YP)

Discusses the use of saline solutions for demonstrations of buoyancy showing oscillations of the Cartesian diver. Describes the physical principles, preparation, and instructional uses for the demonstration. (YP)

Describes the peat to coal process. Investigates the organic, inorganic, and sulfur components of coal. Outlines how varying percentages of each are formed. (MVL)

Explains a teaching strategy in which students engage in hands-on activities before being introduced to new terms or reading text material. Outlines the learning cycle phases: exploration, concept introduction, and concept application using example activities. Provides guidelines and checklist for modifying lessons into this format. (RT)

Describes an intelligent tutoring system named MENDEL, including problem GENERATOR, TUTOR, student MODELER, ADVISOR, hypothesis CHECKER, and problem SOLVER. This software may be used by high school or university biology students as a tool for learning concepts and problem-solving strategies in transmission genetics. (YP)

Cites the misconceptions that students beginning the study of electric circuits often have about electricity. Explains the use of capacitors with circuits of batteries and light bulbs to introduce electrostatic forces and help to alleviate the problem of misconceptions. (RT)

Examined the effects of an instructional method used to remedy students' difficulties caused by fragmented and incorrectly interpreted knowledge. Described the method using explicit concept-interpretation procedures. Finds that the method helped to revise students' deficient prior knowledge about acceleration, and helped them to interpret it…

Shows the difficulties of understanding the hypothesis a posteriori. Describes a scientific method containing phenomenologic, hypothetic, and theoretic phases. Provides the results of an experiment on simple pendulum oscillation by using this method. (YP)

Describes a method of ranking the concepts in science texts in terms of these criteria: importance to the curriculum and student interest; the development of the concept in the text; and the level of background knowledge expected of students. Argues that these ratings should guide instruction. (RS)

Describes a case study of an advanced physics class that analyzes the implications of using computerized journalizing. Reports that this technique provides a vehicle for students and teachers to make their knowledge public, builds an atmosphere for valuing the conceptual understanding of others, and mediates an ongoing dialog between the…

Presents the following activities for teaching elementary students about the metric system: Metric Soda Fountain, Metric Meals, Metric Moola, and Metric Golf. (PR)