Discusses some of the alternative approaches adopted by the Experimental College-Earth Science Teacher Project at Minot State College in an attempt to attract general education students and transmit the excitement and challenge of science to non-majors. (JR)

Discusses the production and structure of a sequence of optical crystals which can serve as one-, two-, and three-dimensional diffraction plates to illustrate diffraction patterns by using light rather than x-rays or particles. Applications to qualitative presentations of Laue theory at the secondary and college levels are recommended. (CC)

Discusses an experiment which introduces students to the effects of electrical forces on the motion of macroscopic objects. Included are the proecedures of measuring the charge-to-mass ratio from deflections of charged water drops in horizontal fields and the overall charges delivered in a Faraday cup. (CC)

Discusses the use of a new approach, rather than quantum mechanics, to obtain practical solutions to bond energy problems. Indicates that the complex nature of mathematics and the small magnitude of bond energies involved in an approximation are two practical impossibilities for quantum mechanics to reach simple, reliable results. (CC)

Reports inconclusive results from a study designed to determine if there was a significant difference between student performance in a university physical science course for pre-nurses and their high school science and mathematics background. (JR)

Discusses the use of the "extent of reaction" in teaching freshman honors classes of elementary chemistry to provide students with a unifying concept in the treatment of stoichiometry. Four sample problems are included. (CC)

Discusses the case of DDT which can be introduced to nonscience students in a chemistry course, including the development of DDT, problems associated with its adverse effects, and curtailment of its use in our environments. (CC)

Discusses a simplified Millikan oil-drop experiment which emphasizes the enplanation of basic concepts in mechanics and electrostatics, the use of home-made apparatus, the request for an individual's observation of his own drop, and the application of statistical analysis in data interpretation. (CC)

Discusses the development of new curriculum materials for use in the preparation of chemical technicians in two-year community colleges and technical institutes. Indicates that the texts developed are equally suitable for the chemical part of environmental programs and medical and engineering technician curricula. (CC)