Describes a physics experiment which demonstrates the pitfalls of assuming that a model which represents an ideal system is applicable to a real experiment. Explains how the failure may give greater understanding of the problem and may lead to improvements in the model. (ML)

Students often complain that lectures requiring simultaneous writing and listening is a difficult task. An alternative method is provided to teachers to facilitate note taking by students. (ZWH)

Describes a program of demonstration experiments used to stimulate interest in chemistry, specifically aimed at increasing university chemistry enrollments. Discusses program goals, experiments, design criteria, and several caveats related to the development of such a program. (JM)

Provided is a model to depict how the development of process skills can be systematically achieved and in turn determine the students' achievement in science practicals. Modified laboratory instruction is compared with conventional laboratory instruction. The results of field testing on 164 ninth grade subjects are described. (MVL)

Presents an identification method which uses the process of elimination to identify pollination systems. Provides the polyclave key, methodology for using the key, a sample worksheet, and abbreviation codes for pollination systems. (MVL)

Describes the construction of durable, inexpensive and large sand-hourglasses for use in controlled experiments that allow students to observe, infer, measure, record data, and predict. This hands-on activity is designed to take place over a three-day interval. Includes materials needed, techniques, procedures, follow-up activities, and resource…

Tested the effectiveness of a program designed to teach children how to conduct and interpret a controlled experiment. Results indicate that the ability to control variables can be taught using the program (which consists of activities related to designing, building, and launching model rockets). (JN)

Describes an investigation of the strategies used by 47 high school students in solving volumetric analysis problems in chemistry. Reports that students in the high ability group mainly used the "formula" approach, while those in the low ability group tended to use the "proportional" approach to problem solving. (TW)

Advocates the use of discovery or guided inquiry experiments for developing critical thinking in problem solving. Provides a stepwise method for creating inquiry experiments and provides an example by comparing the two methods for a freezing point experiment. (JM)

Discusses the need to teach problem-solving skills in science. Differentiates between guided discovery, guided inquiry, guided exploration, and guided investigation. Describes how guided exploration evolved and how it can be applied to the science curriculum. Provides a flowchart for guided investigation. (TW)

Describes the use of analogy relative to the classical theory of momentum and kinetic energy, and addresses the advantages and disadvantages of this approach with respect to modern physics. Discusses the origins of the billiard ball analogy in the work of Coriolis and its influence on later theories and investigations of nuclear fission, particle…

Reports on the development of a modified Problem-Based Learning approach to a freshman course. Enables faculty to teach basic biochemical concepts and principles as well as their application to clinical cases. Includes the syllabus and workshop goals based on Bloom's taxonomy. (MVL)