Describes various procedures applicable to secondary school science classes, including: (1) constructing a centripetal accelerometer; (2) demonstrating weightlessness with a small scale apparatus employing a catapult; (3) teaching hexadecimal counting by using the fingers; (4) demonstrating oscillation and resonance in tuned circuits. (CS)

Presents a set of experiments that explore variables within the steps of the filtration process. (CS)

A procedure is described for providing preparations of dividing cells from root apical meristems, requiring only inexpensive equipment and minimal experimental skill, and using 8-Hydroxyquinoline and Toluidene-blue as a chromosome stain. The method has been sucessfully tested in schools and yields permanent preparations of adequate quality for…

Describes several different philosophies of mind with each philosophy's explanation of the mind-body problem. Philosophies discussed include dualism, materialism, functionalism, radical behaviorism, logical behaviorism and central-state identity. (DS)

Describes effects which produce the semidiurnal tidal bulges, using elementary methods, without reference to fictitious forces and without recourse to a potential. (Author/HM)

Presents three notes on new equipment, techniques, or materials of interest to teachers of physics. (HM)

Described are 15 events that take place during a physics olympics at a Michigan high school. These events are planned with the idea of involving the older students in designing and presenting projects to ninth graders, and involving the latter in a day of outdoor participation. (SA)

Presented is a short discussion of factors causing color changes in animals. Also described is an activity which may be used to demonstrate the response of amphibian skin to a melanophore stimulating hormone in high school or college biology classes. (PEB)

Discusses the results of a survey on process control education which was conducted in the United States and Canada in 1978. Process control courses and textbooks at the undergraduate and graduate level are included. (HM)

Describes an electronic technique for making a series of timing measurements in quick succession, using the signal from one photodiode. Two undergraduate experiments, one on linear momentum and the other on angular momentum conservation, are included. (HM)

Discusses how the topic of surface water waves can be used in an introductory physics course. Applications in marine science are described. Formulas and activities using a ripple tank are discussed also. (CS)

The separation by high performance liquid chromatography of five common dyes from foods containing "artificial color" is described. (CS)

Describes an experiment which illustrates the general aspects of intermolecular energy transfer between triplet states in rigid solutions of organic compounds solved in an ethanol-ether mixture. Measurements of quenching and energy transfer processes are made using the chemicals of benzophenone and naphthalene. (CS)

This undergraduate biochemistry experiment introduces the student to techniques for cell lysis and release of protein from the cell in soluble form, ion exchange and gel chromatography, and dialysis. (Author/BB)

Describes an experiment suitable for an instrumental analysis or quantitative analysis course. (BB)