Presents topography activities. Includes a chart of topographic mapping symbols. (MKR)

Describes an excursion that effectively helps students visualize the earth's immense size and numerous structures without the usual scale and ratio distortions found in most textbooks and allows students to compare their body's height to a scaled-down earth. (JRH)

Presents a simple, graphical method for tracking the apparent motion of the Moon through a seven-day phase. Describes the necessary equipment, and the daily procedure for making observations. Includes suggested open-ended questions along with an appropriate reference. (JJK)

Describes results of a survey of geoscience and mineral technology libraries in Brazil conducted to determine the level of knowledge and adoption of marketing techniques among library managers. A lack of knowledge of marketing was verified, and recommendations for improving the situation are suggested. (12 references) (LRW)

Presents low-cost learning activities to help teach elementary students about the earth's magnetic field. One project has students make a model of the earth's magnetic field. Another has them experiment with magnetism. (SM)

Describes creating a Model Aquatic/Terrestrial Ecosystem for use in helping students understand how water moves beneath the ground's surface. The model is constructed from a fish tank using rocks, soil, gravel, clay, and organic materials. Author describes possible cooperative-learning and problem-solving activities that can be done with this…

Presents an activity for introducing students to geologic time. Students choose their own metaphor for geologic time, selecting milestones in Earth history and scaling these events to their metaphors.(PR)

Describes the conversion of a standard biological brightfield microscope for examination of thin sections and characterize, in detail, the use of both black and white and color photomicrography in the geological sciences. Several illustrative examples on the use of transmitted and reflected polarized-light microscopy to solve geological problems…

Provides easy to teach and understand laboratory exercises for three fundamental concepts (plate movement, rock mechanics, and geologic time) that are often left out of the geology and Earth science curriculum. (ZWH)

Uses models to illustrate the possible "migration route" of the sugar maple in response to predicted global climate change. Curriculum activities for students are provided that specifically address the sugar maple forests of the Great Lakes regions. (ZWH)

Describes three activities to help students understand plate tectonics. (PR)

Describes types of sand and presents science activities using sand. (PR)

Describes four experiments that enable students to explore the phenomena of evaporation and condensation and determine the relative humidity by measuring air temperature and dew point on warm September days. Provides tables to calculate saturation points and relative humidity. (MDH)

Discusses physics, earth science, and physical science concepts that are challenging for students and teachers because they are difficult to understand and demonstrate. Identifies ratio and inverse-square as a unifying-concept approach according to the National Education Standards. Supports teaching based on student-centered activities, long-term…

Uses multimedia to teach geology to fourth grade students. Explains the HyperStudio project and discusses students' reflections on this project. (YDS)