This experiment demonstrates the polarization properties of the transition moment, vibronic activity in an excited state, cyrogenic techniques, crystal site splitting, and the use of mixed crystals. (BB)

Described is a cardiovascular simulator which illustrates the use of a catheter-coupled external transducer for dynamic pressure measurements in the circulatory system. With the simulator, students can observe the effects of stroke volume and rate upon maximum, minimum, and mean arterial pressure. (Author/GA)

Advocates teaching of organic reaction mechanisms through the methods which are used in elucidating them. This also provides a useful way of illustrating the theories and methods of physical chemistry. Describes an approach to teaching three reaction mechanisms: substitution in alkanes; addition to alkenes; and ester hydrolysis. (Author/GA)

Discusses a laboratory experiment, using the single-photon counting technique, to determine the fluorescence spectrum of NaI(T1) crystal under gamma excitation. (Author/GA)

Describes a simplified version of New's method for culturing early chick embryos. The technique allows continuous observation of the critical first three days of development and the conditions for setting up successful cultures are also presented to help both teachers and students. (HM)

Investigates processes leading to a rationale for designing a teacher's manual. A sample of 45 teachers was used to give feedback information before, during and after teaching a newly developed laboratory block in genetics for the eleventh-twelfth grade level in Israel. (HM)

Factors that influence the efficiency of laboratory experiences include: size of laboratory group, length of session, discussion, special tools, and applications of knowledge learned. It is suggested that these variables may be altered to insure that students gain from their time spent in the laboratory. (BH)

Provides a guide for setting up learning centers in easily handled stages. Discusses six stages in the development of individualized instruction through the use of learning centers and offers specific guidelines for using this technique for facilitating instruction. (FL)

Proposes a method to be used in the language laboratory to develop audiolingual skills and at the same time give the student an active role in the use of the laboratory. (AM)

Ideas intended for use in a high school biology laboratory are given. Swordtail fish are described as subjects for observation in animal behavior studies. (SA)

Discusses fire safety and fire control in the chemistry laboratory. The combustion process, extinguishing equipment, extinguisher maintenance and location, and fire safety and practices are included. (HM)

Discusses safety matters in school and university chemistry laboratories and how to maintain clean, pollution-free air in the working areas in chemistry teaching and research laboratories. (HM)

Presents seven chemistry experiments, courses, and laboratory activities which have been done by some college chemistry teachers as a way of exchanging new ideas. (HM)

The hazards associated with recombinant DNA research are presented along with some social implications and the development of recombinant DNA research guidelines by the National Institutes of Health. (SA)

Evaluates the value and effectiveness of college science laboratory instruction. An observational system called the Science Laboratory Interaction Categories (SLIC) was used to assess the performance of students and instructors in introductory and advanced laboratories of a large midwestern university. (HM)