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)

Discusses two sampling methods used to evaluate ambient air: the bubbler technique and the use of static samplers. Indicates that vegetation is also excellent indicator of air pollution effects. (CC)

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)

Research supported in part by a United States Public Health Service Grant from the National Institute of Mental Health. (VM)

Report from the Wisconsin Research and Development Center for Cognitive Learning, supported in part as a research and development center by funds from the United States Office of Education, Department of Health, Education, and Welfare. (VM)

Research part of a Senior Honors Thesis submitted to Kent State University by Patricia Sorce, who was a National Science Foundation Undergraduate Research Participant while conducting this research. (VM)

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)

Research supported by a grant from the National Institute of Mental Health. (RS)