Presents laboratory activities focusing on the development of sexually mature gametophytes from single-celled spores. Includes techniques for culture and manipulation of gametophyte development from spores that are applicable for hands-on activities for students at all levels. (MKR)

An exercise that uses a common bacterium, E. coli, in great numbers, to detect a demonstrable change in the ability of some cells to become resistant to the common antibiotic streptomycin is presented. The procedure for preparing and pouring the gradient antibiotic plates is provided. The advantages of using the Basic Fuchsin in the agar are…

The development of a curriculum that integrates laboratory, field, and nonlaboratory experiences in an undergraduate biology department is described. Some of the laboratory experiences provided students in a Principles of Biology course and how other parts of the upper division curriculum are structured around these key experiments are discussed.…

Discusses experimental work with computer-simulated microworlds as a means for overcoming the tension between laboratory research and field research in psychology. Topics addressed include characteristics of microworlds; examples of microworlds; and three approaches to research with microworlds, including the individual differences approach, case…

Evaluates the traditional method of intercalating theoretical and seminar classes with laboratory practical work. Proposes a new schedule where students get problem-based learning of theoretical concepts during the first half of the course, and plan and execute a laboratory project during the second half. (Author/CCM)

Reports on how science teachers might work to improve their students' use of science process skills in ways that will contribute to their meaningful learning during laboratory activities. (Author/WRM)

Presents a relatively short, simple, safe, and visual method for student preparation of chlorine, bromine, and iodine using reactants and glassware that are easy to obtain and handle. (WRM)

Presents a homemade, safe, effective, and inexpensive reactor vessel for ultrasonic horns with applications in microscale experiments in teaching and research laboratories. The reactor vessel is designed for an ultrasonic probe that allows reactions to be run at the microscale level at a wide range of temperatures and under inert atmosphere.…

Demonstrates how leaf slices provide an inexpensive material for illustrating several fundamental points about the biochemistry of photosynthesis and respiration. Presents experiments that illustrate the effects of photon flux density and herbicides and carbon dioxide concentration. (DDR)

Introduces Vee mapping as an alternative method for traditional lab reports. Discusses six areas concerning Vee maps: (1) focus question; (2) word list; (3) concept map; (4) events; (5) data and analysis; and (6) conclusion. Explains the use of Vee maps and reasons for their use. (YDS)

Reviews the interests and inventions of Robert Bunsen. Describes the constant water level bath, suction pump, absorptiometer, and diffusiometer. Contains 16 references. (DDR)

Introduces a laboratory experiment that investigates and compares the carbon monoxide content of automobile exhaust and cigarette smoke using gas chromatography techniques. (YDS)

Presents a laboratory experiment showing the properties of smooth muscle using the crop and gizzard of the earthworm. (ASK)

Introduces programs that assist blind students such as Tactile Access to Education for Visually Impaired Students (TAEVIS). Reports on two blind students who successfully completed physics courses and their learning strategies. Discusses the accessibility of visual aids. (YDS)