Investigates specific strategies and activities used by two chemistry teachers to enhance student understanding of chemistry at the 11th- and 12fth-grade levels. Discusses teacher characteristics, class activities, classroom management, and monitoring for understanding. (YP)

This study reports the instructional effects of issue investigation and action training on the environmental behavior of middle school students. Discussed are the methodology including training and modules, the design of the study, instruments used, scoring protocols, and analysis of results. (Author/CW)

Discusses the use of saline solutions for demonstrations of buoyancy showing oscillations of the Cartesian diver. Describes the physical principles, preparation, and instructional uses for the demonstration. (YP)

Reports on an investigation of a population of dandelions on a school lawn. Describes the objectives, rationale, study area, and the results of the study. Includes tables and graphs that show data collected. (RT)

Offers suggestions for structuring the writing of paragraphs about data tables and conclusions. States that data tables usually contain: the central or most typical value and the variation or spread within the data. Provides steps for writing a paragraph and an evaluation of effectiveness. (RT)

Presents a programed method that inventories and classifies hazards. 8iscusses the following topics: (1) student and hazard source, (2) elimination of the source, (3) adaptation of the source, (4) isolation of the source, (5) adjustment of the surroundings, (6) isolation of man, and (7) personal protective equipment. (MVL)

Describes the peat to coal process. Investigates the organic, inorganic, and sulfur components of coal. Outlines how varying percentages of each are formed. (MVL)

Provides a point of view that the organic lab is a good place for the student to use and learn problem solving skills while performing the cookbook experiments. Notes that an equilibrium between the theoretical and practical aspects of organic chemistry should be established. (MVL)

Presents a strategy for science learning through a game activity which uses human and/or animal footprints. Provides numerous ideas for creativity in constructing a story and adapting tracks for experiential experiences. (RT)

Explains a teaching strategy in which students engage in hands-on activities before being introduced to new terms or reading text material. Outlines the learning cycle phases: exploration, concept introduction, and concept application using example activities. Provides guidelines and checklist for modifying lessons into this format. (RT)

Describes an intelligent tutoring system named MENDEL, including problem GENERATOR, TUTOR, student MODELER, ADVISOR, hypothesis CHECKER, and problem SOLVER. This software may be used by high school or university biology students as a tool for learning concepts and problem-solving strategies in transmission genetics. (YP)

Compares the abilities of pre-nursing and mainstream chemistry students in general chemistry courses. Finds no significant difference between the populations. Lists topics covered, representative test questions, and performance comparisons. (MVL)

Abstracts six conference papers from the ISRAEL Association for Computers in Education. Included topics are spreadsheets for problem solving, concept acquisition with microcomputers, numerical mathematics, learning math as a science, studying polygons with LOGO, and a growth curve simulation of microorganisms. (MVL)

Discusses the reading problems that are concerns in a Science-Technology-Society program of science teaching. Describes possible origins of the lack of comprehensible reading abilities and the teacher's role in facilitating the process. (RT)

Describes a chemical engineering course for senior undergraduates and first year graduate students in biochemical engineering. Discusses five experiments used in the course: aseptic techniques, dissolved oxygen measurement, oxygen uptake by yeast, continuous sterilization, and cultivation of microorganisms. (MVL)