Instructions are provided for constructing a rotating table suitable for demonstrations and experiments in physics. Examples of results obtained when using the table are also provided. (SK)

Student activities and experimental procedures are described for an experiment using black and white photographic development to illustrate the determination of reaction rate, kinetic order of a reactant, and activation energy. (Author/SK)

Chromatographic techniques are used in conjunction with a Parr oxygen combustion bomb to determine sulfur in fuel oils. Experimental procedures and results are discussed including an emphasis on safety considerations. (SK)

A list of demonstrations of discrepant events which have been found to stimulate the curiosity of students in science at the secondary school level are presented. A brief description of the materials and procedures for 15 of these demonstrations is outlined, with short explanations of concepts and principles involved. (MP)

Describes experiments in which inexpensive or standard laboratory equipment is used to measure several macroscopic magnetic properties of thin rare earth garnet films used in the manufacture of magnetic bubble devices. (Author/CS)

Reports a procedure for the formation of alkyldiazenido complexes of molybdenum in the absence of dioxygen, suitable for inclusion in an advanced inorganic chemistry laboratory. Includes background information and experimental procedures for two complexes. (SK)

Suggests that students study heats of neutralization of a 1 M solution of an unknown acid by 1 M solution of a strong base using the method continuous variation. Reviews results using several common acids. (SK)

Describes four activities for the elementary science classroom to help students develop their powers of description, explanation, and prediction. Topics of the activities are spool "gears," crystal comparisons, yeast magic, and clay cargo carriers. (DS)

Describes a physical science course for nonscience majors developed at California State University, Fullerton, to teach some of the basic principles and methodology of chemistry and physics using current environmental problems to stimulate students' interest. (HM)

Describes demonstrations using soap bubbles prepared from readily available materials to illustrate a number of scientific principles. (SK)

Describes concrete laboratory manipulations in which time and its measurement are studied while investigating the parameters affecting the functioning of a pendulum. Also describes the origin of pendula and how cultural and historical references are integrated into laboratory practice. (Author/JN)

Presents an overview of the construction techniques of dye lasers suitable for student projects and briefly describes possible laboratory projects. (JN)

An experiment is described relating activities with pendulums to the process skill of controlling variables. Includes materials needed, directions, and follow-up questions for the experiments. Lists five other experiments which could be used to teach the control of variables. (DS)

Describes an experiment to measure the thermal conductivity of some gases in an undergraduate physics laboratory using a hot wire method in the pressure range ten to one torr. (HM)

Presents excerpts from a teacher's manual which describes laboratory activities in genetics for advanced secondary school biology students. Maximized are the pedagogical aspects in choosing activities, arriving at intermediate decision-points, and planning the evaluation of pupil achievement. (CS)