Presented is an in-class earth science activity on the weathering of rocks. The materials, procedures, and results of this activity are discussed. (CW)

Suggestions and tips for novice and experienced eclipse watchers are provided. Discussed are the mysterious shadow bands that occur just minutes before an eclipse. Directions for building a deluxe pinhole projector for observing the eclipse, a reading list, and a glossary of related terms are included. (KR)

Develops a simple core-halo model of a galaxy that exhibits the main features of observed rotation curves and quantitatively illustrates the need to postulate halos of dark matter. Uses only elementary mechanics. (Author/MVL)

Books that appear in this annotated bibliography were selected as outstanding children's science trade books published in 1992. They are intended for prekindergarten to eighth grade and were evaluated by educators and librarians. Selection is based on three criteria: the book is accurate and readable; and its text, format, and illustrations are…

Challenges the accepted view in America that the modern undergraduate student takes longer to graduate than the traditional four years. Evaluates a 10-year record of geoscience students who graduated from three programs. Contains 17 references. (DDR)

Focuses on mapping activities designed to provide simulated experiences that help students understand the techniques used to measure and represent underwater terrain without making direct visual observations. (DDR)

Describes an activity that uses a simple model ocean to investigate the influence that the trade winds have on equatorial Pacific sea-surface temperature and height. (Author)

Presents relatively simple experiments that allow students to see inductive current and electromagnetic force caused by the earth's magnetic field. (WRM)

Describes a set of experiments that enable students to see the effects of soil erosion and some of the measures that can be taken to prevent it. Illustrates ways in which soil and biodiversity can be restored in areas that have suffered severe land degradation. (CCM)

Introduces an activity in which students analyze satellite imagery to investigate the effects of large-scale phenomena related to oceans. Includes activity worksheets. (YDS)

Investigates students' perceptions of selected aspects concerning the organization of and learning from fieldwork. Findings indicate that students either seek partners whom they regard as capable of making positive contributions to the fulfillment of learning tasks, or they opt for friendship groups and a large minority of students regard…

Analyzes fifth grade students' diagrams and explanations for the spatial, causal, and dynamic processes inside the earth. Identifies and characterizes the different types of student models for the inside of the earth, and characterizes the reasoning associated with these models. (Contains 74 references.) (Author/YDS)

Students in a laboratory techniques course for preservice teachers were engaged in an activity that was designed to assess their skills in identifying geologic materials and model a situation that might be encountered by new teachers. Related activities were designed to give the preservice teachers practical experience in obtaining geologic…

Analyzes narrative essays--stories of rock formation--written by pre-service elementary school teachers. Reports startling misconceptions among preservice teachers on pebbles that grow, human involvement in rock formation, and sedimentary rocks forming as puddles as dry up, even though these students had completed a college level course on Earth…

Argues that it is possible to evaluate the excellence of academic documents involving the study of geosciences K-16 by using the Geoscience Academic Excellence Model which was developed by scientific societies including the National Research Council/National Academy of Sciences. (Author/YDS)