Indicates that "ease of access to equipment makes no less important the need to plan how each session of machine-guided practice is to be integrated into the instructional sequence, and that improvisation can impede learning. (DS)

Presented as a paper at the meeting of the National Association of Language Laboratory Directors (NALLD), New York, New York, December 28, 1968. (DS)

Baltimore County instructs its teachers in use and production of multimedia materials with two completely equipped mobile unites with a staff of media specialists. The program has been successful but is hampered by lack of funds. (JS)

Describes multimedia learning centers, established with government funding, for which the contractor, Dorsett Educational Systems, will be paid according to the increased learning efficiency of participating students. (RD)

Discusses teaching ecology in high schools in terms of kinds of problems suitable for study and management of field and laboratory activities. (EB)

Presents the theoretical explanation of the observation that when a pen that is stuck in a hard rubber ball and dropped, the pen may bounce to several times the dropped height. Includes the procedure and models created to explain the observations. (DS)

Suggests methods of teaching principles of geological inference by observation of sidewalks, parking lots, school grounds, and vacant lots. (AL)