Five brief items are discussed. They include (1) preservation of reactive ions in solid solution, (2) the molecular partition function, (3) purification of methoxychlor, (4) a kinetics experiment, and (5) determining molecular weights of acids. (RWH)

Describes a series of experiments designed to verify the various relationships implicit in the ideal gas equation and shows that the success of the Graham's law effusion experiments can be explained by elementary hydrodynamics. (GS)

Presents a program designed to provide nonscience majors with some insights into the experimental nature of physical science via visits to research laboratories. (PEB)

Describes a device which employs two diffraction gratings and three or four simple lenses to produce arbitrary absorption or emission spectra that may be doppler shifted and spectroscopically examined by students some distance away. It may be regarded as a sort of artificial star whose spectrum may be analyzed as an undergraduate laboratory…

Questions present methods of science instruction in secondary schools. Offers suggestions to increase learning efficiency by substitution of alternate instructional procedures. The Exploratorium in San Francisco is identified as one alternative. (CP)

Teachers asked students to write down as many names for their favorite numbers as they could. The results were surprising, with many students performing better than their teachers had expected. (SD)

After studying a unit on probability students "put it all together" by analyzing outcomes of real and computer-simulated games of craps. FORTRAN and APL programs for generation of the games are provided in this article. (SD)

The author raises questions concerning the cost-effectiveness of the use of computers in education, the use of computers in individualizing instruction, and the value of such techniques as computer simulation of experiments. (SD)

Describes an experiment in which the rate of reaction can be followed using a colorimeter and data can be used to determine order of reaction, rate constant, and energy of activation. (GS)

A mathematics laboratory with commercial and teacher-made materials, a workshop, and a discussion room were established. An extension course taught how to use the instructional aids and accompanying behavioral objectives and activity cards. Active use of the lab is increasing. The teachers' enthusiasm has spread to the students. (KM)