Argues that visual images can act as conceptual pegs for concepts or complicated procedures and help students perform better in the cognitive, affective, and manipulative domains of the laboratory. Conclusion was based on a study of chemistry laboratory students (N=83). (DDR)

Reports on studies that examine reasons and justifications trainee science teachers give for the ways they conduct practical work. A case for the reevaluation of practical work in science education is made and it is argued that science teacher behavior is best understood anthropologically. Implications for mentoring and school-based training are…

Retinoid signaling has been recently shown to be required for mnemonic functions in rodents. To dissect the behavioral and molecular mechanisms involved in this requirement, we have analyzed the spatial and recognition working memory in mice carrying null mutations of retinoid receptors RAR[subscript [beta]] and RXR[subscript [gamma]]. Double…

A project assessed the need and developed a curriculum for environmental technology (laboratory analysis and environmental sampling) in the emerging high technology centered around environmental safety and health in Texas. Initial data were collected through interviews by telephone and in person and through onsite visits. Additional data was…

Materials for teaching a unit on water pollution are provided in this teaching package. These materials include: (1) a student reading booklet; (2) a reference booklet listing a variety of popular chemical, biological, and physical tests which can be performed on a local waterway and providing information about the environmental effects and toxic…

This unit, developed by the Third World Science Project, is designed to add a multicultural element to existing science syllabi (for students aged 11-16) in the United Kingdom. The project seeks to develop an appreciation of the: boundless fascination of the natural world; knowledge, skills, and expertise possessed by men/women everywhere;…

This book contains hands-on ocean-related laboratory activities. Major chapter hearings are: (1) "Water Experiments" (dealing with the physical nature of water and listing 10 activities); (2) "Ocean-Going Vessels" (studying the principles of boats, with three experiments); (3) "Experiments Using Shells" (containing four activities); (4) "Sand…

This study compared the effects of cooperative learning groups to traditional instruction in remediating students' misconceptions about temperature. Students from grades 3, 4, and 5 in two rural elementary schools participated in the study. Students completed a pretest, a cognitive conflict laboratory activity and a posttest that measured…

This book is designed to develop sequentially a range of concepts and skills relevant to the basic disciplines of science. Emphasis has been given to the knowledge basis of science, the social context of science, design and technology, and knowledge and skills relevant to personal development. Students are provided an opportunity to engage in…

This pamphlet offers suggestions for improving laboratory safety. It is based on the notion that having an understanding of inherent hazards and learning how to be safe should be an integral and important part of science education. It is organized into "steps requiring minimal expense" and "steps requiring moderate expense." Included in these…

The importance of analyzing laboratory situations in a technical school special needs area is increasing rapidly. Such a system is essential for objectively analyzing the content of laboratories and describing the tasks performed there in a standardized and easily understood manner. The laboratory description can be easily used to provide program…

The manual provides information on teaching techniques and services, materials, equipment, and publications for teaching chemistry to physically handicapped students. Section I addresses the classroom in terms of common needs, lecture/discussion techniques, and special arrangements. Section II covers the laboratory with general guidelines and…

General and specific safety procedures and recommendations for secondary school science laboratories are provided in this guide. Areas of concern include: (1) chemicals (storage, disposal, toxicity, unstable and incompatible chemicals); (2) microorganisms; (3) plants; (4) animals; (5) electricity; (6) lasers; (7) rockets; (8) eye safety and…

Presented are laboratory procedures of a serologic or immunologic nature for use in the diagnosis of a variety of infectious and noninfectious conditions. Included are tests for the detection of specific antibodies in the patient's serum, as well as immunologic tests for the detection of other products in the patient's serum and biological fluids.…

This manual presents techniques for the collection and examination of specimens in the diagnosis of parasitic disease and in field surveys conducted to determine the extent of parasitic infections in human and animal populations. It discusses areas in which parasites are most likely to be found and the relationships of parasites, vectors, and…