This programed booklet is designed for the engineering student who is familiar with the techniques of integral calculus and electrical networks. The booklet teaches how to determine the current and voltages across a resistor, inductor, and capacitor after the switch in a network has been closed. This is a classical problem in engineering, the…

Evaluated was achievement by college freshman students in a chemistry laboratory course. Twenty-eight sections, a total of 292 students, were grouped into six sections with written direction in a structured laboratory experiment schedule, six sections with verbal direction in a structured schedule, and sixteen sections with an unstructured…

This project examined the effectiveness of the three-lecture-per-week method of teaching general education biology as compared with six alternative approaches involving various reductions in weekly class attendance. In three of the experimental groups lectures were reduced in number and supplemented by readings, quiz sessions or study guides; in…

College biology students, using an audio-tutorial format, participated in a study in which instructional time and quality were structured to accommodate for differences in students' abilities to attain their potential (mastery strategy). Students in the experimental group who failed to achieve 80 percent on an evaluative checktest for a subunit…

THE ROLE OF THE COMPUTER IN UNDERGRADUATE PHYSICS INSTRUCTION IS PRESENTED. MAJOR TOPICS INCLUDED IN THE REPORT ARE CURRICULAR ADMINISTRATIVE PROBLEMS, PEDAGOGICAL TECHNIQUES, AND SYSTEMS AND EQUIPMENT. INFORMATION RELATED TO LINGUISTICS MODE COMPUTER SYSTEMS, REMOTE CONSOLE EQUIPMENT, LINGUISTICS MODE PHYSICS PROGRAMS, COMPUTATIONAL MODE PHYSICS…

Discusses quantitative, purely geometrical features of field lines; equations are derived for field lines and radii of curvature of field lines for several idealized cases. (MLH)

Explains the necessity for a domain concept in understanding ferromagnetism and discusses various factors influencing the domain configuration in a crystal. (MLH)

Presents results of the American Chemical Society (ACS) survey for test items for the ACS Cooperative Examination in inorganic chemistry. (SL)

Discusses developments in the field of gradient index optical lenses for resolving problems of lens spherical abberration. (SL)

Recommends the Linnett structure IV (as in VIII for molecular oxygen) for future use when a valence-bond structure for a Pauling 3-electron bond is required. Examples are provided to illustrate why this recommendation is made. (JN)

Outlines rules for a group electronegativity method. Also provides examples of this method and examples of other group electronegativities derived by both experimental and computational methods. (JN)

Introduced is a method for estimating carbon-13 nuclear magnetic resonance (NMR) shifts. The method is brief and simple so that students can use it with ease. (RH)

Presented is a general approach and equation for teaching the hydrolysis of salts. This general equation covers many more sets of conditions than those currently in textbooks. The simplifying assumptions leading to the known limiting equations are straightforward. (RH)

Offers a classification system of catalytic effects in photochemical reactions, contrasting characteristic properties of photochemical and thermal reactions. Discusses catalysis and sensitization, examples of catalyzed reactions of excepted states, complexing ground state substrates, and catalysis of primary photoproducts. (JM)

Reports on the development of an equation that relates, quantitatively and continuously, bond order and bond length for any homo- and heteronuclear bond. (JN)