Described are a method of cultivating Euglena, a method for presenting and solving mole equations, and a design of a simple solar collector. (SL)

Diffusion of curricular innovation proceeds most rapidly among heavily populated countries that invest substantially in public education. Diffusion proceeds less quickly in countries having educational goals different from those of the model materials, having barriers to information exchange or underdeveloped publishing technology, and where…

Reviews a fictitious case study used as a values-clarifying teaching strategy for students of human genetics and bioethics. (SL)

Discusses fundamental improvements with the new Soviet biology curriculum. Concludes that it is essential that the teacher have the correct ideological conviction and professional skills if the new curriculum is to work effectively. (RKM)

Reports on the major events in the history of science and technology in the United States from 1887 to the present. The events are organized into 10-year blocks with a summary of the major advances in the fields of politics, economics, medicine, biology, physics, chemistry, and electronics. (CW)

Discusses one mechanism proposed for the two-step initiation/promotion scenario of the development of cancer called oncogenes and a possible alternate mechanism that may prevent tumors from developing. Uses the example of retinoblastoma to illustrate the mechanisms. States that these mechanisms may not be caused by the activation of oncogenes. (CW)

Describes a project for junior high and senior high school students designed to safely preserve hard-bodied marine invertebrates. Details the materials and procedures used in this technique. Stresses the use of non-toxic solutions and producing a lifelike specimen. (CW)

Described are embryology experiments demonstrating effects of lithium on the nervous system and the use of hypertonic salt solutions to produce exogastrulation in the eggs of Xenopus laevis. (SL)

Three examples of simulation exercises which require no special apparatus or materials are described. All are intended to be used with senior classes in secondary education but can be adapted for use with other groups. A list of requirements for setting up each simulation is appended. (Author/EB)

The results of using laboratory instruction as part of the total biology program in the Biological Sciences Curriculum Study are reported. (Author/SA)

Describes the first Biology Olympics for high school teams which took place at Slippery Rock State College, Pennsylvania. Individual events are described as well as the visitation day program for nonparticipants. (SA)

Described is the BSCS Center for Education in Human and Medical Genetics, established to design, develop, and evaluate an instructional module in human genetics for high school students. This module will be a self-contained curricular program and will provide individualized open-ended experiences which present basic genetics content in the context…

Explains how a shoreline is formed and how it changes, and why its changes do not always coincide with human plans. Subjects discussed include beaches, beach processes, inlets and beaches, and a marine glossary. (Author/DS)

Discusses alternative theories to evolutionism. Five theories are mentioned, but most attention is given to the steady state theory of species which the author considers the most suitable partner for Darwinism in O- and A-level biology courses in the United Kingdom. (HM)

A modification of the Ames test for detecting carcinogens and mutagens using a strain of bacteria is described. A suggestion is given for checking the correctness of procedures by using particular hair dyes which have been shown to be mutogenic. (Author/SA)