Describes how to convert a bicycle pump into a vacuum pump by reversing the piston and replacing or removing the one-way valve. (MLH)

Describes how to grow mimosa plants from seed, how to grow large crystals, and how to construct a simple electric motor. (MLH)

Lists suggestions for aiding teachers in answering student questions about sex, including hints for classroom discussions, questioning and answering techniques, and appropriate role for the teacher. Also lists resources (textbooks, filmstrips, pamphlets and reports) for answering questions about sex. (CS)

Discusses benefits of a field studies program in which problems are initiated by students and participation is unlimited. Formal proposals outlining details of the research, finances, and logistics are written and submitted to the board of education by the students themselves. (CS)

Reviews the life of Sir Isaac Newton, stressing his contributions to science and society. (CS)

Cites examples of classroom episodes illustrating how values of science can be supported by the classroom teacher. Values of science are identified from the 1966 publication of the National Education Association, "Education and the Spirit of Science." (CS)

Discusses computer simulation approach of Limits to Growth, in which interactions of five variables (population, pollution, resources, food per capita, and industrial output per capita) indicate status of the world. Reviews other books that predict future of the world. (CS)

Describes a game that illustrates the principles of population genetics and helps explain the occurrence of evolution through changes in gene frequencies. Demonstrates the importance of genetic variability in evolution: winning is achieved by a player's species becoming "completely heterozygous" for six characteristics. Players move directed by…

Provides instructions for constructing an Ames window tunnel, a device that illustrates illusion and perception. (CS)

Described are six interdisciplinary energy instructional packets developed by the National Science Teachers Association. Packets are designed to complement existing curricula and include topics for elementary and secondary levels. (SL)

Described is a packet of instructional materials presenting case studies of six environmental issues. The political processes, moral dilemmas, and alternate sides of each issue are presented. An instructor's guide is included. (SL)

Described is a technique for introducing ethical instruction concerning scientific responsibilities in a student-centered science class activity. Students role play to decide scientific issues. Three proposed issues are included. (SL)

Described is a science activity for impressing upon students the complexity and the delicacy of interactions between organisms and the environment. (Author/SL)

Described is a technique for inducing curiosity in students through conceptual conflicts due to contradiction. A case study involving the evolution of atomic structure theory is provided. (SL)

Described is the construction of a density gradient column and several density related experiments which can be performed with the device. (SL)