Presented is a teaching progression that enhances learning through low-cost, manipulative transparencies. Discussed is instruction about restriction enzymes, plasmids, cutting plasmids, plasmid maps, recording data, and mapping restriction sites. Mapping wheels for student use is included. (CW)

Describes using the common house plant, "Coleus blumei," to illustrate gravitropic effects, phototrophic effects, and hormonal effects in plants. (PR)

Discusses the inherent flaws in considering and using the epistemology of the natural sciences as equivalent to a pedagogic basis for teaching and learning in the natural sciences. Discusses the difference between practicing science and learning to practice science. Concludes with the presentation of three new motives for the use of laboratory…

The life history of the Chironomus tentans can be observed in easily established and maintained laboratory cultures. Projects for the classroom include observing hydration of an egg mass; embryonic development, hatching and larval feeding; larval activity; and mating activity. (MDH)

Describes a study that explored the interplay between students' scientific epistemological views (SEVs) and their learning in school laboratory activities. Finds that students having SEVs oriented to constructivist views of science tend to focus more on negotiating the meanings of experiments with their peers than students with SEVs more in line…

Reports on a laboratory experiment where students measured their heart rate, blood pressure, mood, alertness, and cognitive performance. Measures showed significant circadian heart rhythm variations. They were strongly correlated and peaked at different times. Discusses the implications of this and students' reactions to the experiment. (MJP)

Discusses the lack of compassion in biology teachers for laboratory animals as well as their indifference to students' compassion for animals. Teachers see dissection as scientific method, whereas students may see it as cruel. If educators are repeatedly exposed to compassion for all life by students, they will eventually see the need for greater…

Provides suggestions to promote English literacy to students with hearing impairments in residential environments. Strategies include model reading and writing, read to children regularly and in American Sign Language, set up a writing center, encourage book sharing, set up a home library/reading center, and encourage ownership of books. (CR)

Reviews the current goals of a laboratory course and describes experiences in using laboratory time to cover several important topics related to industry and academia. Discusses several subjects and presents related experiments. Contains 184 references. (DDR)

Internet learning opportunities via the National Science Foundation-supported New Jersey Networking Infrastructure in Education project are described. Their data-centered approach to science and math skills instruction is illustrated by two examples from each of the three styles of activities: (1) collaboration; (2) using public domain databases;…

Describes a time allocation study that was designed to determine how two types of teachers spent their time regarding gender differences in a primary school computer laboratory in Costa Rica. Topics include the sociocultural context of gender roles in Costa Rica, hypothesis testing, and the domination of boys in computer labs. Contains 101…

Explains how to use saliva instead of blood for classroom blood typing activities. Describes the protocol and equipment needed. (PR)

Considers relations between the official pedagogy of the writing program that the author administers and his administrative practices, to come to terms with the hidden curriculum of his situation. Argues for a shift from thinking about administration as masterful organization and implementation to conceiving of it as relational and receptive, a…

Argues that the transfer of plasmid from a bacterium to a plant cell has received little attention. Presents an experiment for studying this type of genetic transformation using the causative agent of crown gall, a malignant plant tumor. (DDR)

Reports on a study of seventh-grade students' interactions in small groups during a biology laboratory activity. Finds that girls have the potential to perform equally as well as do boys in the science laboratory and that both individual and gender differences contribute to students' differential verbal communication and laboratory engagement.…