Discusses contributions of computers to research in magnetic and inertial-confinement fusion, charged-particle-beam propogation, and space sciences. Considers use in design/control of laboratory and spacecraft experiments and in data acquisition; and reviews major plasma computational methods and some of the important physics problems they…

Examination of selected material from the history of science can provoke a number of questions about the nature of that activity as indicated in part 1 (SE 533 400). Presented here are some guidelines to help teachers discuss the observation statements and kinds of questions raised in part 1. (JN)

Suggests incorporating three-phase learning cycle into laboratory teaching to foster formal reasoning skills. Describes five types of laboratories, each of which offers experiences necessary for the initial phase of the learning cycle. Indicates importance of presenting concepts in a way that progresses from concrete to abstract. (JN)

The Mole Concept is a learning cycle (patterned after University of Nebraska-Lincoln's ADAPT model) for the chemical unit "mole." Discusses objectives and activities involved in each phase of the cycle: exploration, invention, and application. Indicates the cycle is superior to traditional lecture-demonstration for teaching the abstract mole…

Describes an experiment in which static/dynamic properties of a helical, steel spring are investigated. During the experiment students discover that the behavior of the springs is non-Hookean at small loads. Background information (including static deflection and period of oscillation) and typical results are provided. (JM)

Background information and laboratory procedures are provided for an undergraduate experiment requiring students to prepare a coordination compound. (SK)

Suggests a threefold rationale for practical work in science: in developing laboratory skills, in learning to work as a scientist, and in acquiring a feel for phenomena. Three types of pupil practical work (exercises, investigations, and experiences) are then discussed. (Author/JN)

Cyclic voltammetry is a simple experiment that has become popular in chemical research because it can provide useful information about redox reactions in a form which is easily obtained and interpreted. Discusses principles of the method and illustrates its use in the study of four electrode reactions. (Author/JN)

Discusses fern life cycle and basic techniques for culturing fern gametophytes in the classroom. Also discusses investigations into the reproductive biology of ferns and into the early development of gametophytes. (JN)

Examines the basking postures of captive eastern painted turtles exposed to two different sources of illumination (white floor lamps and infrared heat lamps) and three types of substrates (sphagnum, rock, wood) and discusses possible ecological and evolutionary significance of these behaviors. (Author/JN)

Spatial filtering, based on diffraction/interference of light waves, is a technique by which unwanted information in a picture ("noise") can be separated from wanted information. A series of experiments is described in which students can create a system that functions as an optical computer to create clearer pictures. (Author/JN)

Five papers presented at the Seventh Biennial Conference on Chemical Education (Stillwater, Oklahoma 1982) focused on qualitative analysis curricula and instruction. Topics included benefits of qualitative analysis, use of iodo/bromo-complexes in qualitative analysis schemes, lecture demonstrations, and brief descriptions of three courses. (JN)

An apparatus is described in which effects of pressure, volume, and temperature changes on a gas can be observed simultaneously. Includes use of the apparatus in demonstrating Boyle's, Gay-Lussac's, and Charles' Laws, attractive forces, Dalton's Law of Partial pressures, and in illustrating measurable vapor pressures of liquids and some solids.…

Citing several disadvantages in using traditional gold-leaf electroscopes in schools, a simple and easily constructed electroscope, suitable for both O- and A-level physics, is described. Information on adapting the electroscope to become a pulse electrometer is provided. Electroscope activities/demonstrations are also provided. (Author/JN)

Describes modification of a chemical reaction to a single 4 1/2-hour laboratory period. Reaction kinetics between 2, 4-initrochlorobenzene and piperidine to form 2, 4-dinitrophenyl-piperidine and piperidinium hydrochloride are followed conductometrically at three temperatures to obtain data to calculate activation parameters. (Author/JN)