Bioluminescence transformation experiments show students the excitement and power of recombinant DNA technology. This laboratory experiment utilizes two plasmids of "Vibrio fischeri" in a transformation experiment. (LZ)

Describes a lab designed to analyze the organic compounds found in an ordinary fast-food lunch. (ZWH)

Teachers often use demonstrations to prepare students for a science experiment. This article describes a demonstration method to ensure that students are not supplied with all the answers before the actual experiment and to help them to remain an active part of the science lesson. (ZWH)

Examines the experimental program initiated by Albert Michelson at the end of the nineteenth century through a literary analysis of its reception. Provides various interpretations of the failed experiments by science commentators over a period of decades. (HB)

Examines recent developments in Nancy Cartwright's philosophy of science against the background of her earlier ideas. Argues that Cartwright's views fall within the broad empiricist tradition. Contains 19 references. (Author/WRM)

Describes the early stages of development of the Campbell Collaboration Social, Psychological, Educational & Criminological Trials Register (C2-SPECTR) to help those preparing and maintaining systematic reviews of experiments in these fields. The register currently contains more than 10,000 records, including more than 300 references to existing…

Discusses the effects of expectancy on learning in a life science instructional laboratory exercise. Contends that prior knowledge directs the act of observing. Investigates the role of prior conceptions on secondary school students' ability to observe scientific phenomena. (Contains 30 references.) (YDS)

Describes an experiment in which the incubation time to observe denitrification and other processes of the nitrogen cycle is reduced from 7-14 days to 24-48 hours. Presents calculations of processes in the nitrogen cycle in the form of a dichotomous key. (SAH)

Describes an alternative to teaching ecology by using bacteria to test competitor survival. Students observe a time-dependent selective killing of other unrelated bacteria by Pseudomonas aeruginosa. (SAH)

Describes the inexpensive and safe method of using roundworms in the classroom or laboratories. Because parasitic infections are so common, students should learn about worms. Provides statistics on just how many people have a worm infection in the world. Explains how to study living nematodes, and obtain and use earthworms. (Contains 13…

Details a laboratory experiment focusing on the relationship between the structure and function of the tracheary elements of the xylem. (MKR)

Presents a simple experiment to compare the performance of the PASCO Introductory Dynamics System with that of an Ealing student air track. Discusses the relative advantages of both. Concludes that for a wide assortment of motion activities in a low friction environment, or studies of frictional forces, the PASCO Introductory Dynamics System is a…

Discusses enzymes, catalysts, and factors that affect the rate of a chemical reaction. Presents activities based on enzyme action on hydrogen peroxide and lactose intolerance. (Author/JRH)

Explains how to apply India ink to observe phagocytosis and vacuole formation in Tetrahymena. Recommends this experiment for introducing students to microscope use. (YDS)

Presents a microbiology experiment on how to make soft pretzels with different flours and analyze the results using regression models. (Contains 12 references.) (ASK)