Describes the commercial applications of hydroponics, and then outlines ways in which this soilless plant culture method can be used in the science classroom and laboratory. Gives directions for making a suitable growth solution, and suggests appropriate student experiments involving hydroponics. (JR)

Lists the Indian uses of sixty plants found in the Pipestone National Monument Aboretum in Minnesota. Suggests that similar arboretums be planted in schools to provide students with the opportunity of becoming familiar with these native plants and how they contributed to the lives of American Indians and early settlers. (JR)

Discusses implementation and advantages of take-home experiments, including three respective examples in acoustics, magnetism, and optics. The activities can be categorized into demonstration experiments, see-what-you-can-find-out'' experiments, and experiments requiring preparatory class discussion or written directions. (CC)

Provides description of an activity in which students synthesized sulfanilamide or sulfathiazole, II. The drug was then used as a chemotherapeutic agent. (RH)

Describes author's use of a three foot long tube, open at both ends, to exemplify that his highest falsetto note is lower than his lowest whistled note. (CC)

Describes a surgical technique for performing pinealectomics, applicable to classroom and laboratory studies, by using a head-holding device for small animals and a flat dissecting tray outfitted with holding straps for larger animals. (CC)

Describes experiments on flash photolysis and relaxation kinetics for college students using any standard photographic flash. List of experiments with explanations are included. (PS)