Article describes an experiment to deterimine how to promote cognitive growth in terms of classroom mathematics learning. (MM)

Describes a project involving the integration of inorganic and organic chemistry by a study of copper determination involving an organic complex. (TS)

Revised version of a paper presented at the TESOL Convention, March 1971, New Orleans, La. (VM)

Describes fluorescence demonstrations related to several aspects of molecular theory and quantitized energy levels. Demonstrations use fluorescent chemical solutions having luminescence properties spanning the visible spectrum. Also describes a demonstration of spontaneous combustion of familiar substances in chlorine. (JN)

Suggests using African-clawed frogs (Xenopus laevis) for conditioning (behavior) experiments. Other experiments using these easy-to-care-for frogs are outlined. (JN)

Describes collection of quantitative samples of microorganisms and accumulation of physical data from a pond over a year. Provides examples of how final-year degree students have used materials and data for ecological projects (involving mainly algae), including their results/conclusions. Also describes apparatus and reagents used in the student…

Presents nine selected physics notes which could be used in selected physics courses. Each includes the name of the author and a description of activities suggested. (HM)

Presents two demonstrations which are intended for chemistry college students. These demonstrations are: (1) enhancement of concentration quenching by micelles; and (2) the thermite lecture demonstration. (HM)

Examines student and teacher perceptions about the purpose and effectiveness of laboratory work at Year 10. The views of students and their teacher on the goals, conduct, and assessment of laboratory work were compared. Findings suggest that the relevance of laboratory work to everyday life could be made clearer to students. This may entail…

Illustrates how teachers designed new science learning environments based on research readings from science and technology studies and studied teaching and learning within these environments. Examples of students' science-related activities include videotaped laboratory activities, taped interviews, and student-produced artifacts collected over…

Presents an instrumental analysis laboratory section of a problem-based format that includes elements of authentic, investigative, and cooperative learning. Discusses students' attitudes, achievement, and effects of the problem-based instruction on the learning process and higher order thinking in laboratory students. (KHR)

Urges the use of plastinated specimens as an alternative to traditional dissection in biology classrooms. Suggests that plastinated biological specimens heighten student interest and enhance teaching. Interview responses of students, teachers, and administrators to the use of plastinated specimens in selected high schools were found to be very…

Introduces an alternative method to determine the mechanics of a moving object that uses computer vision algorithms with a charge-coupled device (CCD) camera as a recording device. Presents two experiments, pendulum motion and terminal velocity, to compare results of the alternative and conventional methods. (YDS)

Discusses classroom demonstrations of classical conditioning and notes tendencies to misrepresent Pavlov's procedures. Describes the design and construction of the conditioner that is used for demonstrating classical conditioning. Relates how students experience conditioning, generalization, extinction, discrimination, and spontaneous recovery.…