A demonstration which illustrates the concept of electric potential using electrophorous is presented. Equipment and procedures for the demonstration are discussed. (CW)

Reviewed are 15 methods for fast slide production. Methods are classified as in-hand methods and farmed-out methods of slide production. Slides are compared to transparencies as another fast presentation aid. (CW)

Presented are several ideas for projects involving ladybird beetles. Discussed is background information about the insects; and projects involving life histories, intra-specific variation, taxonomy, genetics, behavior, ecology, habitat surveys, population biology, and overwintering biology. Lists 12 references. (CW)

This paper shows that more pupils take biology than the other sciences in England. Biology attracts pupils of all abilities and girls in particular. Performance data reported suggests that the study of biology is not as effective in enhancing science performance as are the physical sciences. (CW)

Provides a poster describing how oil is made, discovered, recovered, distributed, and used with suggestions for using it. Includes cards for an oil vocabulary game with its playing instructions and seven oil scramble words. Gives three addresses of sources for additional information. (YP)

Describes the curriculum development, criteria for selection, and supplementary materials of science and technology education in the Philippines. Provides a content list of "Science and Technology III" core textbook for secondary school students. (YP)

Described are features of a theoretical model for fluid pressure. Analyzes six introductory physics textbooks based on an introduction and meaning of the pressure concept; characteristics of pressure; and liquid as a pressure transmitter. Presents three models of pupils' conceptions. (YP)

Described are some of the difficulties presented in these reactions by competing equilibria that are usually ignored. Situations involving acid-base equilibria, solubility product calculations, the use of ammonia as a complexing agent, and semiquantitative comparisons of solubility product values are discussed. (CW)

Described is a five-week introductory inorganic laboratory course for first-year undergraduate students. Included are details of three preparations and three analyses conducted by the students in the course. (CW)

Indicates and describes items that are incorrect in textbooks and a teacher edition of Discover SCIENCE for K-6. (YP)

Describes apparatus for Doppler demonstrations. Provides several pictures of the apparatus and ways it could be used. (YP)

Describes the Soviet educational system and physics textbooks and compares them to their American counterparts. Seventeen references are listed. (YP)

Discusses the equipment and techniques for taking photographs using a sound-actuated trigger. Describes a method using two flash units, two sound triggers, and a high-frequency clock to measure speeds. Provides several high-speed photographs. Lists 11 references. (YP)

Introduces one professor's endeavor, "Insect Fear Film Festival," to educate the public about entomology. Discusses some related topics and misconceptions. (YP)

Lists annotations of books based on accuracy of contents, readability, format, and illustrations. Includes number of pages in each entry, price, and availability. Topics cover animals, biographies, space science, astronomy, archaeology, anthropology, earth and life sciences, medical and health sciences, physics, technology, and engineering. (RT)