Notes the inevitable tensions that arise between centripetal writing centers and centrifugal writing across the curriculum programs. Examines the tutoring program at an eastern university as an example of a decentralized writing center that resists pressures to assume a uniform composition pedagogy and coordinates its work with many parts of the…

Describes an X-Y scanner used to create acoustic holograms. Scanner is computer controlled and can be adapted to digitize pictures. Scanner geometry is discussed. An appendix gives equipment details. The control program in ATOM BASIC and 6502 machine code is available from the authors. (JM)

The use of reciprocal peer teaching (RPT) was evaluated by first-year medical students participating in gross anatomy laboratory sessions at the University of Ottawa. In RPT each student in turn served as a teacher of his peers. The students compared RPT with staff teaching. (Author/MLW)

Presents a classroom experiment that demonstrates the directional sensitivity of the human ear. Outlines the activity's procedures and provides a diagrammatical view of the experimental arrangement. Also included is an analysis of the expected results. (ML)

Describes a physical chemistry experiment which incorporates the use of a microcomputer to enhance understanding of combined kinetic and equilibrium phenomena, to increase experimental capabilities when working with large numbers of students and limited equipment, and for the student to develop a better understanding of experimental design. (JN)

The Israeli University system illustrates that when publication becomes of paramount value in teacher training institutions there is not enough time left for faculty to staff the time-consuming laboratory/practicum experiences as they deserve to be staffed. Faculty should publish, but the publish-or-perish model may seriously undermine teacher…

Presents information on the population density, breeding biology, habitats, and food of the magpie bird ("Pica pica"). Suggests and outlines several student projects that have been beneficial in teaching animal behavior and ecology. These investigations focus on diet, territory size, and food hoarding. (DH)

A pilot project was initiated in 1979 at the University of Delhi to develop low-cost, locally produced science equipment. This article: (1) describes the pilot project; (2) presents examples of the low-cost equipment produced; and (3) discusses how the approach used rather than the equipment developed is disseminated. (JN)

With recent drop in price for computer-related equipment, ways are suggested to make best use out of computer-assisted programs for teaching foreign languages. An understanding of computer's capabilities and shortcomings is stressed, so that decisions about the extent of its usage for a particular language program can be made from confidence and…

Describes an experiment in which students become familiar with the organic chemistry extraction process, perform analyses by thin layer and column chromatography, and use the absorption spectrum (obtained from a spectrophotometer) for identification. List of materials needed and procedures used are provided. (JN)

Discusses topics and issues related to conducting dangerous and/or potentially dangerous demonstrations. Includes a number of resources that secondary and college teachers can consult for additional information. (JN)

Explains the techniques and benefits of using a language laboratory which is arranged so that each of several groups can be programed and monitored individually from the console when teaching languages for specific purposes to groups of mixed-ability adults. (Author/MBR)

Discusses use of a hornet or wasp nest as an inexpensive science investigation on thermoregulation. The investigation can be done during the winter months and adapted to various levels. Sample results and background material are included. (JM)

Describes a computer program which calculates a best estimate of refractive index and dispersion from a large number of observations using the double variation method of measuring refractive index along with Sellmeier constants of the immersion oils. Program listing with examples will be provided on written request to the author. (Author/JM)

The theme articles address positions and ideas regarding issues and questions associated with the use of school and community laboratories in the supervised occupational experience program. (JOW)