Presents a report that deals with several topics from different parts of the world. A system for creating more meaningful maps, the recycling of organic wastes in agriculture in China, and producing pigs and poultry without pollution problems are among the topics presented. (HM)

Proposes an analog circuit for use in sedimentation analysis of finely divided solid materials. Discusses a method of particle size distribution analysis and provides schematics of the circuit with list of components as well as a discussion about the operation of the circuit. (JM)

Produced by Leicestershire Museums, Art Galleries, and Records Services in conjunction with the Soil Survey of England and Wales, the "Down to Earth" travelling exhibit, devoted entirely to soil science, will tour in the United Kingdom between 1983 and 1989. The exhibit is described and literature that accompanies the exhibition is…

To help plan effective teaching strategies, it is important to determine students' existing knowledge about the topic to be taught. Interviews with New Zealand students showed that they hold nonscientific ideas about soil. These student views should be respected by teachers. They should be discussed and compared with scientific viewpoints. (RM)

Describes an introductory college level course in soil and vegetation which uses lecture, audiovisual tutorial, individualized instruction, field trips, films, and games. The course consists of three segments: basic concepts of soils, basic concepts of plants, and soil and vegetation concepts in a spatial context. (KC)

Lists equipment and materials needed and procedures for analyzing soil, in which secondary school students experience practical applications to acid-base reactions, pH, oxidation-reduction, precipitation and solubility. (CS)

Two implanted slide techniques are described by which activity of proteolylic bacteria and the growth of algae in the soil can be readily studied by school students using simple apparatus and methods. Variations are suggested for studying the effects of agricultural practices and environmental conditions on the soil bacteria and algae. (Author/DS)

Described is a slide set which is designed to illustrate the entire range of soils found in the arid regions of the earth's surface. Information on physical and chemical soil properties, soil classification, and related soil management considerations for agricultural development are included. (CW)

Stressed is the interrelationship among the three major groups of sedimentary rocks and the potential benefits in understanding of sedimentary processes to be gained by a petrosynthesis. Listed are 59 references. (CW)

Reviewed is research which supports retesting students to enhance learning. Evaluation results, materials and methods used to implement the procedure are described. Included are tables on student responses concerning involved groups and the value and benefits of retakes. (RT)

Reports that students with soil science background performed better on a diagnostic examination; no relationship existed between exam performance and country of origin, degree sought, or undergraduate class quartile. Concludes that exam results, the grade received in a beginning graduate-level course and the cumulative graduate grade-point average…

Discusses magnetic polarity stratigraphy as a tool for correlation of fossiliferous terrestrial deposits. Explains the strengths, weaknesses, limitations, preferred conditions, sampling, laboratory analysis, and applications of this technique. A table of paleomagnetic studies on vertebrate-bearing terrestrial sections arranged by age and locality…

Presents mind-mapping and role-playing exercises designed to guide students in the exploration, expression, and integration of varying viewpoints and opinions of a controversial topic (nitrate contamination of water supply); illustrate the importance of applying soil fertility principles to environmental and agronomic management; and encourage…

Presents the general theory to explain chemical movement in soil. Describes classroom demonstrations with visually stimulating results that show the effects of soil structure, soil texture, soil pH, and soluble organic matter on that movement. (MDH)