Can you imagine a class where students cover the content with each other rather than simply listening to the professor's lecture? Can you envision students developing their own laboratory investigations and quizzing each other weekly to check for understanding? Well, that's pretty much how the major science organizations across the nation are…

Describes an experiment to characterize the enzyme polyphenol oxidase. Includes Purpose, Reagents and Equipment, Procedure, Extraction, Treatment of Data, and Discussion. (MA)

Describes the use of student-made photomicrographs as a source of student motivation and as a means for review of laboratory exercises in an introductory microbiology course. Includes an evaluation of this teaching method. (Author/MA)

Explains an experiment in which the rotation of a patch of skin on a tadpole results in a frog with rotated spots, proving that the spot pattern is determined long before it becomes visible. Procedures used are included. (DH)

Outlines steps to generate cell samples for observation and experimentation. The procedures (which use ordinary laboratory equipment) will establish a short-term primary culture of normal mammalian cells. Information on culture vessels and cell division and a list of questions to generate student interest and involvement in the topics are…

Presents a simulation model approach to the study of evolution. This model combines both practical and theoretical aspects of evolutionary biology course work. The author has used laboratory hardware for this simulation with 20 working groups of students. (HM)

Reports the presence and use of known carcinogens in Kentucky colleges, junior colleges, and high schools. Includes a listing of known carcinogens and the synonym names under which each may be labeled. (SL)

Microcomputers can record laboratory measurements which human laboratory partners can never collect. Simple, harder, and general-purpose interfaces are discussed, with suggestions for several experiments involving an exercise bike, acceleration, and pendulums. Additional applications with pH meters, spectrophotometers, and chromatographs are also…

Discusses the rationale for and use of minilabs (requiring from 15 to 90 minutes to complete) for freshmen chemistry experiments. Provides several examples, advantages for students and instructors, and results of a questionnaire evaluation completed by 83 students. (JN)

Describes a course which emphasizes all facets of analytical chemistry, including sampling, preparation, interference removal, selection of methodology, measurement of a property, and calculation/interpretation of results. Includes special course features (such as cooperative agreement with an environmental protection center) and course…

Describes test-tube organic chemistry procedures (using comparatively safe reagents) for the beginning student. These procedures are used to: examine differences between saturated and unsaturated hydrocarbons; compare structural isomers; and compare organic and inorganic acids and bases. (DH)

Describes a laboratory experiment that begins with a discussion of the fermentation process, the steps of winemaking, the types of wines that can be produced, and the differences between wines. Outlines the procedure for making red wine in the laboratory and describes other types of wine that can be produced. (GS)

Provided are procedures for a demonstration which illustrates the concept of summer stratification of lakes in the temperate zone as maintained by thermal resistance to mixing. The demonstration requires only food coloring, water, and common laboratory equipment. (JN)

Shows how the natural membrane of a decalcified chicken egg can demonstrate the principle of osmosis within a single class period. Various glucose and saline solutions used, periods of time, physiological effects experiments, and correction for differences in initial weights are noted. (DH)