Describes ways to increase students' writing and communication skills in high school chemistry and physics classes: term papers in chemistry, shorter papers on fascinating physics questions, and oral presentation of the results. (SR)

Provides weather activities including questions, on weather, heating the earth's surface, air, tools of the meteorologist, clouds, humidity, wind, and evaporation. Shows an example of a weather chart activity. (RT)

Described is a teaching model for orienting the teachers to the role of facilitator and resource person during science fairing. Cites steps involved in carrying out a science project, examples of hypotheses, and illustrations of various components of a project. (RT)

Described is a lesson in which the midpoint of the measuring stick (center of gravity), the balance point of the stick (fulcrum) and the arithmetic mean are assumed to be the same point. Provides content background, lesson outline, procedure, evaluation, teacher notes, and diagrammatical representations. (RT)

Describes science activities which use simple chemical tests to distinguish between materials and to determine some of their properties. Explains the water, iodine, heat, acid, baking soda, acid/base indicator, glucose, and sugar tests. Includes activities to enhance chemical testing and a list of suggested powders for use. (RT)

Discusses a visit to a hospital to help students gain an appreciation of technological application. Describes the potential, general and specific considerations, and evaluation of such a field trip. (YP)

Describes an outdoor classroom curriculum project which was devised to accommodate students of average and below-average academic ability and provide them with practical horticultural experiences. Discusses funding, plant facilities, program, and resultant products. (RT)

Reviewed is some of the experimental evidence for apostatic selection from work with artificial prey. Guidelines for further experiments are suggested including experimental design, analysis, variables, and selection in the wild. (Author/CW)

Describes a module in which students seek to gain an understanding of factors that interact in the ecological system of their school. Presents sample questions for use in reinforcing concepts and evaluating student learning, directions for four task activities, and topics for some of the remaining task activities. (RT)

Provides a demonstration for showing the usefulness of thermal principles to physical science students who have difficulty understanding conventional explanations. Outlines materials, procedures, discussion, and advantages of using this method. (RT)

Describes an experiment to determine the density of air within a 10 percent error range using a basketball and a triple beam balance. Provides the typical data and a graph. (YP)

Discussed is a computer network which allows communications on science issues and activities between elementary schools around the United States. Described are the introductory kit, examples of use, and secondary school applications. A contact address is included. (CW)

Described are suitable topics to be included in an urban physics trail. Background information, questions to answer en-route, and follow-up questions are included. Required equipment is listed. (Author/CW)

The ideas behind electrophilic addition to alkenes, and electrophilic substitution in benzene derivatives are discussed. Teaching these concepts to secondary school students is stressed. Five main points useful at this age level are summarized. (Author/CW)

Explored in this article are various cultural beliefs against the backdrop of the science syllabus prescribed by the Caribbean Examinations Council. Allowances for different beliefs between Caribbean islands are suggested. (CW)