Presents activities designed to allow students with backgrounds in states of matter and measurement to have a very concrete hands-on, minds-on experience with both physical and chemical changes and to compare and contrast the end products of each type of change in a concrete way. (PR)

Describes an inexpensive, reproducible alternative assay that requires minimal preparation and equipment for water testing. It provides students with a direct method of detecting potentially biohazardous material in water by observing the reduction in bacterial luminescence. (PR)

Explores the use of extra credit in an introductory geology course. Covers the organization and rational behind the program. (PR)

Describes the use of a "cognitive cylinder"--a cardboard tube with threads or string running through it--to help elementary school students learn to make scientific inferences. The activity requires students to employ such thinking skills and behaviors as observing, collecting, and interpreting data; predicting; measuring; hypothesizing;…

Uses descriptive text, diagrams, and specific assignments to discuss the different learning modalities of students. Equipped with this knowledge and the power of instructional diversity, the joy of learning and teaching can be regained by simply transforming materials currently used in the classroom into materials that best fit a student's…

Presents a poem about a teapot and presents six investigations with teabags. (PR)

High-low sponges are short, science-related activities or questions that require students to analyze a situation or produce a new idea during extra time that otherwise would be wasted. (PR)

In a hands-on experiment to illustrate the concept of cycles in ecology, students use the Winogradsky column to explore the operation of the sulfur cycle and the interrelatedness of organisms in an environment. Lesson plans include materials needed and class procedures. (MDH)

Describes an assignment and the results of having elementary school students design their own interesting and exciting science classroom environment. (PR)

Establishes a rationale for teaching population genetics to students and inservice biology teachers. Suggests strategies for introducing students to the Hardy-Weinberg principle. (MDH)

Describes a microbial bioassay, using molds as test organisms, that demonstrates toxicities of environmental pollutants. Includes laboratory methods and applications for the experiment. (MDH)

Discusses the educational implications of Geographic Information Systems, a technology that provides ready access to an array of geographical data. (PR)

Presents and explains motion illusions that show how the eye and mind can fool the viewer into seeing or interpreting information that is different from the actual images presented. (PR)

Describes thought-provoking activities with the Cartesian Diver system. Presents student answers explaining the phenomena. (PR)

Describes what can be learned from animal dissections and asserts that models and videos cannot substitute for dissections. (PR)