This publication was prepared for elementary teachers and other local personnel responsible for providing, maintaining and using living organisms to enhance elementary science programs. The manual contains a foreword, general information, and an appendix. It gives information concerning equipment and supplies, establishing and maintaining an…

This brochure contains guidelines concerning the use of the master control panel of the language laboratory at the University of Hawaii. Three sections of guidelines are provided: (1) master control panel including teacher headset functions and student booth functions, (2) "things to know"--including the switch functions, instant communication…

In order to meet the needs of both safety and economy, laboratory ventilation systems must effectively remove air-borne toxic and flammable materials and at the same time exhaust a minimum volume of air. Laboratory hoods are the most commonly used means of removing gases, dusts, mists, vapors, and fumed from laboratory operations. To be effective,…

An educational survey of British language teachers concerning the use of the language laboratory focuses primarily on function, facilities, and performance specifications. Read in conjunction with two other reports published by the Ministry of Technology, this study is meant to help teachers, architects, and administrators develop language…

The expense of a dial access information retrieval system (DIARS) is weighed against its benefits. Problems of usage and efficacy for the student are outlined. A fully automated system is proposed instead, and its cost-saving features are pointed out. (MS)

Describes an advanced analytical chemistry laboratory experiment developed for the determination of the performance parameters of a spectrophotometer. Among the parameters are the baseline linearity with wavelength, wavelength accuracy and respectability, stray light, noise level and pen response time. (HM)

Precautions to be used with the handling of corrosive gases, liquids and solids are listed. Storage suggestions for the materials are provided. (CP)

Information from a variety of sources on laboratory safety is pooled to propose a universal code. Along with caution, warning, and danger labels, a required use category is suggested. (CP)

The inability of foreign language students to produce acceptable approximations of new vowel sounds initiated a study to devise a real-time visual display system whereby the students could match vowel production to a visual pedagogical model. The system used amateur radio equipment and a standard oscilloscope. (CHK)

Identifies problems students have learning physics and explains how microcomputer-based laboratory (MBL) tools can help the learner. Describes the possibilities for instruction with MBL instruments and stresses the pedagogical advantages it has in the sciences. (ML)

Provides directions for interfacing the Lehman seismograph through an analog/digital converter. Discusses potential modifications and applications of this approach. (ML)

Describes experiments in which students prepare in situ soluble complexes of metal ions with different ligands and observe and estimate the change in formal potential that the ion undergoes upon complexation. Discusses student formation and analysis of soluble complexes of two different metal ions with the same ligand. (CW)

Investigates the effects of using scientific apparatus versus household objects on the accuracy of primary school children in a simple titration exercise. Indicates no significant difference between the accuracy obtained using the two types of apparatus at the beginning, but improved performance for children using scientific apparatus by the end.…

Discusses general construction principles for miniaturized laboratory glassware. Describes a prototype experimental kit that allows the carrying out of all standard laboratory operations and discusses a trial use of the equipment with students 16- to 17-years-old. (CW)

Suggests a laboratory introduction to solid-solid phase transitions, thermochromism, and color changes associated with changes in ligand coordination suitable for undergraduate students in physical and general chemistry. Describes the preparation and analysis of the experiment. (CW)