Twelve desk-top experiments and demonstrations which illustrate properties of and facts about gas are presented. Each experiment includes: purpose, materials needed, instructions, and a list of facts and properties that have been observed. Several of the activities also include questions for students and items for discussion. The topics of the…

Presents three lapidary activities which have been developed to teach enrichment courses to adults and young people. Described are activities and materials for polishing and shaping rocks. (EB)

Describes in detail the laboratory procedure for studying the process of amitosis in the vegetative cells of Nitella axillaris. (BR)

This field guide is the basis for a five-day, 1000-mile trip through six states and six geomorphic provinces. The trip and the pre- and post-trip exercises included in the guide constitute a three credit course at The Ohio State University entitled "Field Geology for Science Teachers." The purpose of the trip is to study the regional geology,…

Described are two experiments using electronic circuits designed for the activities. The first experiment is Ruchardt's experiment and the second demonstrates the distribution of velocity of electrons. (RH)

Described is an activity that was developed to measure celestial coordinates. Pictures were taken of the asteroid Vesta, coordinates for reference stars determined, and then celestial coordinates of Vesta were determined with assistance of a computer. (RH)

Describes the use of science-related activities to celebrate holidays. (PEB)

Presents a multipart experiment utilizing the same two compounds in preparation, interpretation of infrared spectra, and kinetic study. Several extensions of the experiment are included. (SLH)

Provides suggestions for the compilation of cards on which science activities are outlined for student use. (MLH)

Intrigued by the scientific implications of the theory of tops, the author proceeded to research, develop, and design tops of all kinds. He used common materials and unusual combinations to make his tops. Included in the article are several illustrations of the tops and some guidelines to making them. (MA)