Outlines a workshop for teachers that illustrates a method of extracting DNA and provides instructions on how to do some simple work with DNA without sophisticated and expensive equipment. Provides details on viscosity studies and breaking DNA molecules. (DDR)

Describes a radiation experiment developed to complement a new environmental chemistry laboratory curriculum. A scintillation counter is used to measure radon in water. The procedure relies on the fact that toluene will preferentially extract radon from water. Sample preparation is complete in less than 90 minutes. Because the level of…

Considers how little scholarship concerns the roles that directors of computer classrooms play in maintaining computer classroom (CC) facilities. Argues that CC directors walk a tightrope between the role of teacher and manager. Suggests that focus needs to be placed on building partnerships to maintain facilities, because CC directors cannot do…

Characterizes successful writing tutorials by employing a hybrid methodology, interactional sociolinguistics, combining conversation-analytic and ethnographic techniques. Notes that associated with perceived success were conversational turn structure, tutor mitigation of directives, simultaneous laughter, affiliative overlaps, and small talk.…

Describes a course that uses student-designed laboratory experiments for a one-semester, junior-level physiology course. Discusses advantages and pitfalls of using this methodology. (Author/KHR)

Presents a plan for a unit of work on spiders. Suggests initiating class discussion with issues of safety and environmental responsibility that are considered when dealing with the hands-on aspects of topics. (KHR)

Compares the effects of three different teaching methods: (1) traditional instruction through listening to a lecture, reading, and participating in discussion; (2) instruction with teacher-constructed self-teaching resources; and (3) instruction with student-constructed self-teaching resources. Determines their effectiveness and the time required…

Describes a press conference that was used as a "teachable moment" when owl pellets being used for instructional purposes were found to be contaminated with Salmonella. The incident highlighted the need for safe handling of owl pellets, having a crisis management plan, and the importance of conveying accurate information to concerned parents.…

Develops a simple tree-ring laboratory to demonstrate the basics of dendrochronology. Provides two upper-level laboratory exercises primarily intended to demonstrate the specific dendrochronology subdisciplines of dendroclimatology and dendroecology. Suggests using the exercises separately or in unison as part of a multidisciplinary capstone…

Presents lab exercises in which students use the microscope to study cells. Describes these activities as allowing students to work independently and become more proficient at microscope use. Students also gain a deeper understanding of the more invisible world of science. (Author/KHR)

Described is the basic biology involved in mapping chromosomes as presented at a symposium at a recent meeting of the American Chemical Association which focused on the Human Genome Initiative. Different types of gene maps and techniques used to produce gene maps are discussed. (CW)

Described is an experiment in which factor analysis is used to identify and quantify the components of mixtures containing up to four species. Discussed are the theory, procedures, and sample results for this activity. (CW)

Presented are laboratory methods which allow the demonstration and determination of the diffusion coefficients of compounds ranging in size from water to small proteins. Included are the procedures involving the use of a spectrometer, UV cell, triterated agar, and oxygen diffusion. Results including quantification are described. (CW)

Suggests that university computer labs offer the advantages of decentralizing instruction and drawing attention to students' writing. Notes that, although labs require money and instructional space, the benefits outweigh the limitations. Argues that, once a collaborative atmosphere is established and word processing is practiced, students can…

Discusses the value of setting-specific research for action research in social psychology. Discusses the following concepts: (1) local variation; (2) seeing the general in the specific; (3) connectedness as the fundamental law of ecology; and (4) the value of field stations for community research. (JS)