Discusses risk assessment, including risk assessment as a modeling process, models and social values, political decision making, the public, and risk assessment techniques in the biology classroom. (MKR)

This model is useful in identifying specific learning problems and in providing techniques for the teacher to motivate and teach students at all levels. What it is and how it can be used are discussed, illustrated by specific strategies for geometry and science. (MNS)

Discusses the nature, role, and limitations of analogies in science teaching, suggesting that they be discussed in the classroom to: (1) increase awareness of their limitations; (2) prevent misconceptions from occurring; and (3) encourage critical thinking. (JN)

Describes procedures for designing your own huge scale model of the solar system. (ZWH)

The ENVISION professional development model uses active teacher involvement in inquiry and inquiry-based teaching to enhance teachers' understandings about inquiry-based study of local environmental problems and teaching science using inquiry. Teachers also design and implement professional development for their school-based colleagues about…

Voltammetry is used as a model for teaching chemical instrumentation to chemistry undergraduates at the National University of Singapore. Lists six criteria used to select a successful teaching model and shows how voltammetry satisfies each criterion. (JN)

Describes a simple and effective method in which students use their hands, arms, and fingers to determine absolute configurations. (JN)

Describes a series of easily constructed octahedra having surface facets so that each displays one of the cubic point group symmetries. These may be used simultaneously with other kinds of models to provide within each point group several objects for comparison and study. (Author/SK)

Illustrates and outlines steps for constructing models of twin octahedrons and a rhombohedron. (SK)

Presents two sets of astronomy activities for elementary students: (1) constructing scale models of the solar system which depict relative distances and diameters, and (2) demonstrating the effects of factors responsible for the seasons. (WB)

Discusses the integration of decision-making exercises into biology courses. (MKR)

Discusses the presence and dynamics of continental glaciers in the domination of the physical processes of erosion and deposition in the mid-latitudes during the Pleistocene period. Describes the use of a sedimentary facies model as a guide to recognizing ancient temperate continental glacial deposits. (TW)

Describes a physics experiment which demonstrates the pitfalls of assuming that a model which represents an ideal system is applicable to a real experiment. Explains how the failure may give greater understanding of the problem and may lead to improvements in the model. (ML)

Teaching how scientific models work can result from "black box" techniques applied to various classroom seating arrangements. The teacher can assign students to seats based on observable (last name, height) and nonvisible (telephone number) criteria. Students become involved in guessing the criterion, which leads to discussion of models and…

Offers instructions and geometrical data for constructing solids of the enantiomorphous symmetry classes 233 and 432. Provides background information for each class and highlights symmetrical relationships and construction patterns. (ML)