Describes three experiments which investigated the behavior of "Colisa fasciata" males in full breeding condition subjected to competition for nest sites and a single female. Concludes that for these fish territorial dominance is established in a relatively short time, the period varying with the intensity of competition. (MLH)

Describes the development of transportation historically and the problems solved as well as created. (BR)

Two instruments are described which were designed to provide beginning students with the tools for determining sun-time and the altitude of the sun. Both can be constructed by the student. A simple-to-construct scale is included. Activities are suggested to use with the instruments. (Author/EB)

Describes how to teach metrication in the classroom and home without spending a lot of money. The study should be on-going and not a unit of instruction on metrics. (Author/EB)

Teachers and administrators are encouraged to re-evaluate the instructional program as it relates to the teaching of measurement. Strongly suggests that the primary grades are where an intuitive feeling for units of measurement will take root. (Author/EB)

Describes an exploratory activity leading preschool children to become acquainted with the concept of time. (Author/EB)

Describes the result of dropping objects of similar size and shape but of differing weight through air. Compares ideas on motion of Galileo and Aristotle. (GH)

Describes liquid surface holograms including their application to medicine. Discusses interference and diffraction phenomena using sound wave scanning techniques. Compares focussing by zone plate to holographic image development. (GH)

This booklet contains illustrations of the upper atmosphere, describes some recent discoveries, and suggests future research questions. It contains many color photographs. Sections include: (1) "Where Does Space Begin?"; (2) "Importance of the Upper Atmosphere" (including neutral atmosphere, ionized regions, and balloon and investigations); (3)…

This booklet describes the Pioneer Program and its role in exploring the solar system. Sections include: (1) "Pioneers in Space to Understand Our Earth" (describing the background of the program); (2) "First Pioneers"; (3) "The Interplanetary Pioneers"; (4) "Planetary Pioneers"; (5) "Outer Solar System…

The United States General Accounting Office (GAO) studied the processes used by the National Academy of Sciences to produce two reports on the relationship of diet to health: "Toward Healthful Diets" (1980), and "Diet, Nutrition and Cancer" (1982). Because the reports differed about whether the public could reduce its chronic…

After a brief discussion of science reference service, there is a list of science reference books. First are general science books, then specific lists by broad Dewey decimal classes. Grade levels are given for each work. (LS)

A list of nonprint materials (except 16mm films) in the science area for secondary school and public libraries. A list of producers, with addresses, is appended. (LS)

Discusses basic principles of remote sensing applications and five areas of the earth resources survey program: agriculture and forestry production; geography, cartography, cultural resources; geology and mineral resources; hydrology and water resources; and oceanography and marine resources. Indicates that information acquisition is the first…