Different ways in which the atmospheres of different planets have originated and evolved are discussed. Includes tables on the atmospheric composition of: (1) Earth; (2) Mars; (3) Venus; (4)Titan (Saturn's Satellite); and (5) the outer planets. (SK)

Presents results of Flesch readibility scores for introductory astronomy textbooks and noncalculus physics textbooks. Two tables list Flesch score, mean error, and grade level for 10 texts in astronomy and eight in physics. (CS)

Suggests some nonfiction children's books and learning activities for the study of astronomy in the primary and upper elementary grades. (SJL)

The study and construction of sundials is a useful teaching aid at several levels of instruction, since it involves understanding the shape, divisions, and major motions of the earth. (Author/RLV)

Describes the programs in astronomy at the Gothard Astrophysical Observatory in close association with the Physics Department of the Teacher Training College, the main goals of which are the scholarly pursuit of research and training of creative and productive teachers for Hungarian Primary Schools. (JRH)

Presents an activity in which students in groups explore one planet in the solar system and present their findings to the whole class. Focuses on the planet's location in the solar system, geological features, rate of revolutions, and calendar year. (YDS)

Describes occultation events involving the moon, when the moon blocks the view of planets or stars. Describes other events such as a partial solar eclipse, a penumbral lunar eclipse, meteor showers, and moon phases. Provides a list of internet resources related to these events. (DLH)

Traces the efforts of Searching for Extraterrestrial Technological Intelligence (SETI) since 1960 when a radio-telescope was used to see if any messages were being sent from the vicinity of two nearby stars. Describes attempts to detect microwave/optical signals and technological modification of the cosmic environment. (Author/KHR)

Presents a science activity on collecting micrometeorites from rainwater using magnets. Includes procedural information. (YDS)

Describes how to differentiate a planet from a star and presents an activity in which students investigate whether Pluto is a planet. (YDS)

Introduces knowledge of planetary chemistry for possible use in teaching. Discusses the chemical composition of the planets; the atmosphere and clouds of Venus, Jupiter and its moons, and Titan. Includes diagrams of the greenhouse effects in the solar system, elemental abundances, and the chemical composition of Jupiter. (RT)

Discusses the reasoning behind the determination of the distance from Earth to the Moon by the Greek philosopher Aristarchus upon observing a lunar eclipse. Presents calculations for estimating Earth's distance from the Moon using simple observations made during a solar eclipse. (JRH)