Tips are given for collecting and identifying diatoms for use in secondary school biology classes. Collecting sites described vary from freshwater to terrestrial habitats. (SA)

Describes school science activities in which students race model cars built from mousetraps, construct inventions using discarded junk, and compete in an egg dropping contest. (SL)

Provides construction details for a simple reflectometer that can be utilized for the observational technique known as reflectance spectroscopy. Includes background discussion, applications, calibrating techniques, and typical results. (JJK)

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)

Provides the electronic circuit schematic for the construction of a green vegetation sensor, the directions for its use, and suggestions for student projects. (JJK)

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)

Reviews a science open house held at regular intervals at Yuba College, California. Enumerates the motivation for and the organization of the open house. Reports community wide attendance and participation. Lists the exhibits used at the open house with descriptions. (CW)

Through the use of science-reading kits, one teacher develops practical application of children's reading skills. Each child designs and builds appropriate materials for science learning kit on the subject of his/her choice. (SA)

Described is a multidisciplinary group project for undergraduate students in astronomy and physics. The students design and build a simple radiotelescope subject to a number of realistic constraints such as fixed cost, use of a standard communications receiver, and buying of supplementary building materials off the shelf. (BT)

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)