Discusses the ELEMENTARY SCIENCE program for grades K-6, describing concepts that the program emphasizes and materials used for each grade level. (CS)

Describes techniques for studying the diet of a wild animal through the examination of regurgitated owl pellets. (CS)

Described is the use of cleavage as an aid to microscopic determination of unknown minerals by immersion methods. Cleavages are examined in relation to fragment shapes, types of extinction, and cleavage-optical relationships. (Author/DS)

Describes the nineteenth century wave machines which can be found in the Smithsonian Institution, at Kenyon, and other colleges. Included is information about the apparatus, queries, and descriptions of different wave machines and how they work. Information included may inspire the reader with similar apparatus to repair it and use it again.…

Discusses the frequency of the circular movement of freely moving balls on rotating discs. A theoretical solution is given. (HM)

Discusses a one-semester course offered in the School of Chemical Sciences at the University of Illinois at Urbana which incorporates technical writing and the use of the chemical literature into a single course. (CS)

Chemistry sets, often a child's first contact with chemistry, are becoming less attractive to manufacturers as the market for these items decreases. There is a tendency for recently manufactured chemistry sets to be less adequate than those selling in the same price range in past years. Manuals vary in quality among manufacturers. (RE)

Presented is a community's experience with a lunar sample education kit containing actual pieces of moon rocks and soil on loan from NASA. School and community activities including mini-labs, seminars, and lunar sample viewing sessions, are described. (SA)

In this review of science curriculum materials marketed commercially, the game of "Extinction" and "Sensing the Sea" curriculum guides in marine education are described. (SA)

This resource letter is an annotated bibliography aimed at individuals who have recently become interested in lecture demonstrations in physics. Listed are 103 printed sources of information on lecture demonstrations. Whenever possible, annotations are followed by reviews so that other opinions can be consulted. (BT)

Reviews 17 books and curriculum materials of interest to secondary science teachers. Topics include plant science, pollution, fishes, science investigations, general zoology, neurobiology, electronics, and the environment. (MLH)

Presents annotated bibliography of 101 children's science trade books mainly for grades K-6. Annotations include appropriate grade level of each book. (CS)

Describes a study in which one group of ninth-grade biology students read supplementary scientific journal articles rated at a grade level of 12.7; another group read the same articles rewritten to a level of 9.1. A major result was that the rewritten articles increased reading rate and comprehension. (MLH)

Encourages elementary school teachers to develop energy education materials; describing the initial phases of a National Science Teachers Association (NSTA) sponsored project in energy education. Two learning packets, The Energy We Use (grade 1) and Community Workers and the Energy They Use (grade 2), are described. Mailing list information…

Presented are directions for making a flexible lens that can be used by students to show the bending of light rays. Diagrams are included for supplementing the activities. (KR)