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Peer reviewedOppenheimer, Steven B. – Science Teacher, 1989
To integrate a research/discovery component into one course, an experiment using the sea urchin embryo system is introduced because the teacher manages only one organism and students provide the variables. The materials, handling methods, and experimental methods of the experiment are described. (YP)
Descriptors: Biology, College Science, Embryology, Higher Education
Peer reviewedWhitmer, John C. – Science Teacher, 1976
Described is the construction of a density gradient column and several density related experiments which can be performed with the device. (SL)
Descriptors: College Science, Density (Matter), Higher Education, Laboratory Equipment
