Procedures for using soap films to determine the shortest series of lines connecting several points. (CP)

Describes laboratory activities using algae as the organisms of choice. These include examination of typical algal cells, demonstration of alternation of generations, sexual reproduction in Oedogonium, demonstration of phototaxis, effect of nitrate concentration on Ankistrodesmus, and study of competition between two algae in the same environment.…

A science research program in Ohio using community laboratories and personnel offers gifted high school students the chance to become involved with scientists in a variety of research experiences. Cooperation between community based staff and program staff is critical. Results of the six-year program have been very favorable. (CL)

A photovoltaic cell experiment utilizing the convenience of a solar simulating type lamp is described. Insight into the solid state aspect of a solar cell is gained by the student in studying the characteristics, and deducing from them cell parameters and efficiency. (Author/CS)

Presents a physical chemistry experiment demonstrating the differences between thermodynamics and kinetics. The experiment used the formation of phenol and acetone from cumene hydroperoxide, also providing an example of an industrially significant process. (CS)

Describes an advanced inorganic experiment employing the Faraday magnetic susceptibility system. (CS)

Lists eight guidelines for the use of live animals at the pre-university level adopted by the National Association for Biology Teachers in March 1980. (CS)

A group of teachers' advisers and college tutors became interested in developing some "safe" science activities for junior high school physically handicapped students. A series of pacakage experiments on approximately 30 scientific principles were tested for potential drawbacks for the handicapped child. Several experiments are described. (SBH)

Presents results of a two-year study regarding factors causing student difficulties in performing investigative activities in a beginning biology course. Also investigates the usefulness of written guidelines in alleviating these difficulties. A model for student investigations is proposed. (CS)

Describes how the home toilet tank can be used as either a classroom problem or experiment that provides a simple introduction to process control. (HM)

Describes a physical chemistry laboratory experiment that illustrates the concepts of inductive and resonance effects by the calorimetric determination of the heats of protonation of pyridine, 2-chloropyridine, and 3-chloropyridine. (CS)

Language arts and science activities are combined in a program based on the adventures of an imaginary character. (DD)

Presents activities in which students explore the conditions necessary for a candle to stay lit. Enables students to construct an accurate concept to explain their observation of water rising inside a tube in which a candle has burned out. (JRH)

Describes a sophisticated version of the fruit fly experiment for teaching concepts about genetics to biology students. Provides students with the opportunity to work with live animals over an extended period. (JRH)