Notes that children are scientists at play, positing theories and making observations about their activities. Suggests that successful early childhood science programs include open-ended, free-choice activities; a wide array of equipment; safe supervision; spontaneity; a variety of discovery locations; helpful print resources; and community…

Described are five physics activities including two superconductor projects, synchronizing video camera movements, electrical analysis of a bicycle, and apparatus for the measurement of thermal conductivity. (YP)

Describes a topographic map exercise designed for lab session of two to three hours in an introductory geology course. Students are taught the basic principles of topographic map construction and are then required to make a map of a section of campus. Author claims the approach has improved student test performance and resulted in a deeper…

Predicting weather conditions is a topic of interest for students who want to make plans for outside activities. This paper discusses the development of an inexpensive computer-interfaced classroom weather station using an Apple IIe computer that provides the viewer with up to the minute digital readings of inside and outside temperature,…

Explains the principle upon which a barometer operates. Describes how to construct two barometric devices for use in the classroom that show air's changing pressure. Cites some conditions for predicting weather. (RT)

Presents two demonstrations using the overhead projector: (1) describes how to build a projecting voltmeter and presents uses for the classroom; and (2) investigates the color of fluorescent solutions by studying the absorption and transmission of light through the solutions. (MVL)

Provides instructions for making telescopes. The design and instruction sheets given to students are provided. (PR)

Details 26 experiments designed for use in secondary or college science classes. Includes activities for physical and biological sciences. Describes procedures, materials, safety, and analyses appropriate for each. (CW)

Describes an extra credit science project in which students compete to see who can build the most efficient water rocket out of a two-liter pop bottle. Provides instructions on how to build a demonstration rocket and launching pad. (MDH)