Introduces a laboratory activity on biological diversity that focuses on mollusks and trees. (YDS)

Describes a classroom demonstration supported by the guided-inquiry experience that focuses on separation techniques and other solvent-dependent processes, such as reaction-solvent selection. (Contains 13 references.) (YDS)

Describes the Graduate K-12 Project, which is funded by the National Science Foundation (NSF) and provides fellowship to graduate and highly qualified undergraduate students in the areas of science, mathematics, engineering, and technology to serve in K-12 schools with teachers. Aims to improve communication and teaching skills of fellows,…

Describes the structure of an in-depth laboratory project chemical engineering. Provides modeling work to guide experimentation and experimental work on heat transfer analysis. Discusses the experimental results and evaluation of the project. (YP)

Discusses the validity of studies of Spanish pronunciation in terms of research methods employed. Topics include data collection in the laboratory vs. in a natural setting; recorded vs. non-recorded data; quality of the recording; aural analysis vs. spectrographic analysis; and transcriber reliability. Suggestions for improving data collection are…

Describes a process to develop high school laboratory activities using intertidal ecology of the New England Coast as an example. (MKR)

The molecular properties of Human Immunodeficiency Virus type 1 (HIV-1) reverse transcriptase are summarized and several strategies developed to inhibit its activity are described. (MSE)

The advantages of using invertebrates in teaching physiological principles are discussed. The ability to illustrate with greater clarity physiological principles, the range and variety of physiological processes available for examination, and the unlimited possibilities for student research are topics of discussion. (KR)

Four groups of 24 undergraduates each received the following instruction on logic circuits: (1) lab, then readings; (2) computer simulation, then readings; (3) readings, then lab; and (4) readings, then simulation. Results showed that advance exposure to experiential activity (lab or simulation) aided the learning of unfamiliar technical material…

Describes the construction of an inexpensive light sensor that can be used to measure irradiance in aquatic habitats. Includes a list of tools and materials, details of construction, and usage of the light sensor. (DDR)

Reports on a study of elementary and middle school students' (n=254) intentions to perform science learning activities. Finds that students value different sources of information and support relative to their intention to engage in science learning activities. Contains 40 references. (Author/WRM)

Uses Galileo's 'jumping-hill' experiment as an historical element to improve science teaching in the classroom. Illustrates that the experiment can stimulate an animated discussion in the classroom, even if precise historic circumstances are not mentioned. The historical dimensions bring some color into the lesson, which increases attention. (SAH)

Presents a quantitative laboratory experiment to aid students in understanding how to account for a loss of species biodiversity due to habitat fragmentation. (ASK)

Describes a directed research project that examines the territorial and aggressive behavior of crickets. Presents behavioral ecology laboratory experiments in which students test the hypothesis that crickets with established territories are more likely to win confrontations that intruding crickets. (Contains 11 references.) (ASK)

Describes a method for teaching biology that includes more investigative exercises that foster an environment for cooperative learning in introductory laboratories that focus on vertebrates. Fosters collaborative learning by facilitating interaction between students as they become experts on their representative vertebrate structures. (SAH)