Describes an apparatus for demonstrating the second law of motion. Provides sample data and discusses the merits of this method over traditional methods of supplying a constant force. The method produces empirical best-fit lines which convincingly demonstrate that for a fixed mass, acceleration is proportional to force. (DDR)

Traces the history of the observation of the production of electric sparks and the early history of battery design. Detail is provided about laboratory experiments performed by Robert Bunsen, who spent a great deal of time developing an efficient and comparatively cheap battery. (36 references) (DDR)

Introduces students to dissection, which is an important part of scientific discovery. Students not only gain an understanding of the anatomy of a squid, but also develop a sense of responsibility and respect for the animal that they are using as a learning tool. (Author/SOE)

Reports on a study of a pilot model of a laboratory training course that provides preservice secondary science teachers the opportunity to explore pedagogical possibilities and gain hands-on experience running a general chemistry lab. (DDR)

Reports on a project investigating students' learning processes when video analysis and data logging practical work were used in a first-year undergraduate physics course. Suggests that students were motivated by the tasks and believed that these tasks helped them overall to understand physics concepts. Includes references. (CMK)

Describes an ecology curriculum primarily for elementary school students but also adaptable to junior and senior high school classes. Includes investigative and inquiry-based laboratory problems to accompany inquiry-based teaching. Connects the science learning that happens in school to students' own experiences. (SOE)

Discusses how traditional lab exercises can be converted into investigative exercises. Describes an exercise on seed germination that has students design their own experiments based on their initial results. Involves students in the scientific process and allows them to experience the joys and disappointments of experimental work. (JRH)

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.…