Discusses topics and issues related to conducting dangerous and/or potentially dangerous demonstrations. Includes a number of resources that secondary and college teachers can consult for additional information. (JN)

Explains the techniques and benefits of using a language laboratory which is arranged so that each of several groups can be programed and monitored individually from the console when teaching languages for specific purposes to groups of mixed-ability adults. (Author/MBR)

Discusses use of a hornet or wasp nest as an inexpensive science investigation on thermoregulation. The investigation can be done during the winter months and adapted to various levels. Sample results and background material are included. (JM)

Describes a computer program which calculates a best estimate of refractive index and dispersion from a large number of observations using the double variation method of measuring refractive index along with Sellmeier constants of the immersion oils. Program listing with examples will be provided on written request to the author. (Author/JM)

The theme articles address positions and ideas regarding issues and questions associated with the use of school and community laboratories in the supervised occupational experience program. (JOW)

Discusses techniques involved in producing recombinant DNA. Also discusses implications of the new genetic technologies and prospects for the future. (JN)

A modular system titled "Principles of Technology" for grades 11 and 12 is described. The program, which blends academic and vocational education to meet increased science and mathematics requirements, uses video presentations and hands-on laboratory exercises and can be used as part of a one-or two-year technical program or integrated…

Background information, procedures, and typical results are provided for an experiment illustrating the potential of hydrated salts for solar energy storage. The experiment involves a demonstration often used to illustrate the ease with which some transition metal ions can change their coordination numbers. (JN)

Discusses how the concept of crystallography, especially the relationship between spherical and stereographic projections of crystals, is more easily understood by undergraduate students if they make spherical projections of crystals. Recommends using transparent balloons and a felt-tipped marker to denote the locations of crystal axes, face…

This literature review on chemometrics (covering December 1981 to December 1983) is organized under these headings: personal supermicrocomputers; education and books; statistics; modeling and parameter estimation; resolution; calibration; signal processing; image analysis; factor analysis; pattern recognition; optimization; artificial…

Briefly describes some of the more recent developments in the use of human hairs for such instructional purposes as observing barr bodies and chromosomes, and for culturing to produce cells of both epithelial and fibroblastic morphology. Three main hair categories are also described. (JN)

Described are 13 physics experiments/demonstrations applicable to introductory physics courses. Activities include: improved current balance, division circuits, liquid pressure, convection, siphons, oscillators and modulation, electrical resistance, soap films, Helmholtz coils, radioactive decay, and springs. (SL)

A learning system is a logical arrangement of learning experience progressions designed to improve the relevance of educational topics to the individual student, using such strategies as pre- and post-assessments, recycling activities, learning laboratories, small and large group meetings, and independent study. (MB)

An approach to the teaching of composition undertaken by the University of South Carolina writing laboratory is described in which the objective is to educate students and teachers in the composition process and to discover more about how writing is learned. Focus is on helping people learn to think. (LBH)