Delineated are simple procedures by which evaluations can be performed of the concentrations of contaminants in chemical laboratories. (BB)

Information is given on the basic chemistry of fire and on the characteristics of flammable liquids. (BB)

Discusses increasing class size due to increased pressure on school budgets. Reviews class size in other countries. Presents the disadvantages of crowded and small classes and the difficulties of supervision in large science classes. (ASK)

Recommends some measures to take to ensure that demonstrations are carried out safely. Includes a sample checklist to be completed before and after demonstrations. (DDR)

Provides safety guidelines for hands-on projects or model building activities. (KHR)

Explains how to maintain biosafety in high school level biotechnology and microbiology courses. Focuses on laboratory skills, biohazard containment, and defense perimeters. (YDS)

Presents the script of a skit designed to engage beginning students in a contest to identify and list the most safety violations they observe during the skit. Includes a list of 37 safe laboratory practices. (MKR)

Describes a paternity simulation experiment with two situations. Uses ABO blood group analysis and horizontal agarose electrophoresis to identify the biological fathers. (YDS)

Includes "Welding's Wave of the Future" (Gary Mitikin); "Welding Safety" (Mike Pankratz); "Help Wanted--Only Qualified Welders Need Apply" (Robert J. Teuscher); and "Career Directions." (JOW)

Synthesis of research on safety in agricultural education laboratories found most research focused on agricultural mechanics. Labs appeared to be potentially hazardous places, and teachers have inadequate knowledge of safety laws and ways to provide a safe working environment. (SK)

Mercury tends to vaporize when exposed to air. The warmer the air, the more quickly it vaporizes. Although swallowing mercury can be a problem, the greater risk results from inhalation and skin absorption. Symptoms and health-related problems can result within hours of exposure. Spilled mercury settles in cracks and absorbent material such as…

The feasibility of the laboratory production of copper metal from a readily available, naturally occurring mineral malachite utilizing techniques that are consistent with the time period of around 4000 B.C.E. is presented. The starting materials are inexpensive and convenient and the procedure involves no hazardous reagents and produces no…

A chemical laboratory information profile (CLIP) is presented for the chemical, triethanolamine. It summarizes the chemical's physical and harmful features, exposure limits, and symptoms of major exposure for the benefit of teachers and students, who use the chemical in the laboratory.

Recommendations are made to ensure that academic laboratories are safe and meet safety standards, instruction and information in laboratory safety are widely available, and that students, teachers, and academic research chemists give high priority to safety and health in their laboratories. (author/BB)

Discusses the history of student injury litigation and various defenses that have been used against charges of teacher negligence. Presents 12 guidelines for student safety in vocational agriculture programs. (CH)