Reviews concepts involved in the ideas of curved space and a closed universe in the general theory of relativity. (SL)

Section five lists main dealer locations and main branch offices by region and state. Canada and Puerto Rico are included in this section. Following each state or country, the listings are alphabetical by city. Addresses are given. (MA)

A study was conducted to extend the findings of Meyer (1975) on forward transfer theory, by examining a different subject matter (four science passages) and different adjunct question types (verbatim recognition vs. conceptual short-answer essay). Results were consistent with the forward transfer theory of adjunct questions. (Author/LMO)

Describes methods which can be used to produce high quality duplicate slide sets or black-and-white prints either for use in the classroom or for scientific purposes. Reviews some technical problems in duplicating slides. (ML)

Summarized is a study designed to indicate how secondary school science teachers in Great Britain choose and use industrially produced resource materials (IPRM). Among the types of IPRM considered are films, videos, and computer simulations. Suggestions are given for improving materials for schools. (RH)

This section of the journal includes several short notes on science activities and materials for secondary schools. Activities and materials are included that relate to biology, microbiology, microcomputers, chemistry, and physics. (RH)

Illustrates the 18 steps to the development of a model of a coordination polyhedron that represents the cubic closest-packed structure. Uses a sealed, empty envelope in developing the model in teaching about stereochemistry. (TW)

Reviews the goals and results of the 1985 U.S.-Japan Seminar on Science Education. Contains a table which lists Japanese Science Education periodicals and includes descriptive information on each. The language of most of the journals is Japanese, but in some instances English information is available. (ML)

This bibliography deals with astronomy education at all grade levels. Twelve major journals are identified and articles are specified under these categories. Miscellaneous sources are also included. This list was compiled by the American Association of Physics Teachers Astronomy Education Committee. (ML)

Provides directives for the assembly of a skin sensitivity tester that can be used to examine the skin's function of feeling. Procedures for this experiment are reviewed and a chart for recording the data is also included. (ML)

Presents a model for demonstrating soil mass stabilization. Explains how this approach can assist students in understanding the various types of soil reinforcement techniques, their relative contribution to increased soil strength, and some of their limitations. A working drawing of the model and directives for construction are included. (ML)

The use of simple materials to illustrate complex biological concepts provides benefits to all students, particularly the visually handicapped. A list of materials needed and discussion of procedures used are given for (1) a nucleosome simulation and (2) a supercoiled model of condensed DNA. (DH)

Dynamic crystal model kits are described. Laboratory experiments in which students use these kits to build models have been extremely successful in providing them with an understanding of the three-dimensional structures of the common cubic unit cells as well as hexagonal and cubic closest-packing of spheres. (JN)

Presents three ideas to help hold costs down in purchasing and using science equipment. These include (1) use of pencils and other graphite rods as sensors in potentiometric titrations, (2) rubber bulb modification for pipetting, and (3) a heater for a glassware bath. (JM)

Using trade books when science textbooks are inadequate can help motivate students to more in-depth exploration. Trade book selection criteria include: popular appeal; presentation of facts; design; and illustration. Several bibliographies for teachers and book reviews for children are listed. (DF)