This inexpensive but informative experiment for undergraduate biochemistry students involves isolating phosphatidyl choline from spinach leaves. Emphasis is on introducing students to techniques of lipid extraction, separation of lipids, identification using thin layer chromatography, and identification of fatty acids. Three periods of three hours…

Provides a nuclear film bibliography grouped into the areas of: building and using the bomb; living with the bomb; and living with nuclear power. These films are for mature high school students and older. (MLH)

Investigated was the kind of communication that takes place in oral teaching. Analysis of tape-recorded transcripts of fifteen half-hour biology lessons delivered to high school and college students revealed a high degree of teacher-dominance and infrequency of discussion involving several pupils. (CS)

Describes the procedures used to evaluate the effectiveness of the teacher education curriculum, Physics for Elementary Teachers, including the measurement of students' understanding of physics, understanding of science, and attitudes toward science. (MLH)

Techniques for effective photography of aquatic organisms in the field and laboratory are described. Photography of microscopic organisms and construction techniques of photoaquaria are described. (CS)

Presents generalizations regarding how running water systems change physically, chemically and biologically with stream order, i. e., from the tiny headwater streams (order 1) to those receiving first order headwater tributaries (order 2) and so on. Food chain diagrams respective of stream order are explained. Stream study projects are suggested.…

Describes a technique for downloading digital images of a fresh human cadaver from a commercially available CD-ROM and from the Internet. The images can be annotated to illustrate specific anatomic features and display groups of images in a format that is easy to use during lectures and accessible to undergraduate students for study during and…

Examined the conceptions of teaching and learning of a group of 24 lecturers in first-year college physics and chemistry in Australia, and how those conceptions related to their approaches to teaching. Strong relations were found between conceptions of teaching and approaches to teaching, though relations between conceptions of teaching and…

Reported are the results of a survey of undergraduate students regarding their attitudes about the use of animals in science experiments following a presentation of both sides of the issue. Survey methods, results, and implications are discussed. (CW)

Described is the College Success Program designed to enhance retention of at-risk individuals. The goals, bioethics course offerings at various colleges, course outline for a bioethics course taught in the humanities, and evaluation of the course are discussed. (CW)

Presented is an activity that may be used to help students clarify the basics of graphing while allowing individuals to collect data and perform a simple experiment. A timetable, rules for graphing, materials, procedures, and suggestions for extension activities are provided. (CW)

Described is the evaluation of the Master of Environmental Science program at Monash University (Australia). The design of the evaluation is discussed, and the use of multiple sources of data and an innovative style are highlighted. (Author/CW)

Reorganization in the National Science Foundation's science education section is discussed. Personnel changes and changes in funding in 1990 are emphasized. (CW)

Described is a demonstration which involves the ingrowth of members of the radon-222 decay series. Laboratory procedures, equipment, analysis, and results are discussed. (CW)

Described is a simple and interesting chromatography experiment using three different fluorescence detection principles for the determination of caffeine, saccharin and sodium benzoate in beverages. Experimental procedures and an analysis and discussion of the results are included. (CW)