A pair of interactive computer-student dialogs developed for use primarily with elementary and high school teachers are described. The dialogs use graphic facilities for teaching about the sky as seen from the earth and about the phases of the moon. The primary aim is for the teachers to understand the nature of a scientific model, in this case…

Freshmen cadets in an enriched mediated honors course in General Physics achieved slightly less on a 40 common-item criteria test than cadets in a traditionally taught honors course in the same subject, although the mediated course included approximately 40 percent more content in the area of modern physics. In the enriched course, audiovisual…

The author's primary goal was to investigate the relative viability of different kinds of open teaching. Project Learn, an open elementary classroom, met all the criteria set forth to be called such and was selected for the study. The independent variables were: teacher-guided instruction, small-group instruction, and individual-oriented…

The objectives of this study were: (1) to compare retention rates between self-paced (SP) and classical lecture (CL) chemistry students as measured by the proportion of students who received a withdrawal or unofficial withdrawal grade; (2) as indicated by the distribution of final grades, to compare student achievement between SP and CL students;…

This second edition of the catalog, published in Spanish, contains information on programed materials and programed courses written in Spanish. The names and addresses of 30 publishing houses, private businesses, and governmental agencies are given in the source list. Over 130 programed courses and texts that are available from these sources in…

The thirteenth edition of the guide lists a total of 1,729 selected free materials related to science instruction. Entries are listed under the subject categories of aerospace education, biology, chemistry, environmental education, general science, and physics. These categories are each listed under the different types of media indexed in the…

The basic elective course in introductory botany is designed for secondary students who probably will not continue study in plant science. The objectives of the course are to help the student 1) identify, compare and differentiate types of plants; 2) identify plant cell structures; 3) distinguish between helpful and harmful plants; 4) predict…

The study was conducted to determine the influence of process-oriented television science on teacher and student process and concept achievement, classroom teacher process questioning, and the relationship between achievement and questioning behavior. Grades one through four were used for the study. Fifty-four volunteer teachers were randomly…

Discusses the current state of space-related research and manufacturing techniques. Focuses on the areas of spectroscopy, materials processing, electrochemistry, and analysis. Provides examples and classroom application for using these aspects of the space program to teach chemistry. (TW)

Discusses some difficulties presented by the use of clock reactions with large numbers of students in illustrating the determination of rate laws and the deduction of a mechanism. Suggests the videotaping of a clock reaction without narration to be used with students in stages so that observations can be recorded. (TW)

Reported is a survey designed to assess the relationship between essential competencies as perceived by faculty, and job needs as perceived by graduates of the agronomy department at Pennyslvania State University. Results indicated that while various competencies were valued differently, raters did not disagree on what were important competencies.…

Discusses the use of computer assisted instruction in the medical education program of the Kirksville College of Osteopathic Medicine (Missouri). Describes the animation techniques used in a series of simulations for microbiology. (TW)

Discusses some of the problems associated with teaching report writing to undergraduate chemical engineering students. Introduces a simplified cribsheet for writing formal reports and describes the Fog Index, which can be used to determine the sophistication of the writing. Includes a checklist for grading report writing. (TW)

Reports on a study which investigated the order of acquisition of intuitive notions of qualitative speed. Results indicated that an array of prerequisites, equivalent, and independent relationships existed among the tasks administered. Confirmed the evolution of reasoning for notions of qualitative speed found by Piaget. (Author/TW)

Describes how to construct a simple photometer. Outlines experiments in which this device can be used to demonstrate basic electronic principles, the use of Beer's Law to determine the concentration of an analyte in solution, and the effect of molar absorptivity on the sensitivity of photometric procedures. (TW)