Many words which have been treated in the denotative sense are actually connotative in nature. That is to say that citing a definition or stating a fact should not be a learning goal. Rather, a "conceptualization" should be what teachers are striving for. A series of activities dealing with density have been provided for demonstrations or…

The purpose of this study was to investigate the effects of a laboratory-centered inquiry program on laboratory skills, science process skills, and knowledge/understanding. The inquiry approach used in the Foundational Approaches in Science Teaching (FAST) program and a traditional science textbook approach were compared in terms of the three…

This report by the Automation in the Medical Sciences Review Committee of the National Institute of General Medical Sciences, National Institutes of Health, assesses the current status of medical laboratory science and identifies specific areas in need of further development. (CS)

Described are basic laboratory methods for diagnosing and investigating diseases of importance to developing countries. Intended primarily for the training of technicians who will work in peripheral laboratories, the manual is designed so that student laboratory assistants can be taught to use it with minimal supervision from a teacher. The…

The hypothesis was tested that concrete operational subjects learn better from a laboratory-based concrete activity approach than would formal subjects. Four units of mathematics were studied over a 7-week period by 89 preservice elementary teachers divided into lecture and laboratory groups. A 2 by 2 design (treatment by cognitive level) was used…

Success or failure of a language laboratory is due to a complex set of reasons. An often neglected factor lies in teacher and student attitudes to learner-machine-materials interrelationships. This paper specifies significant factors affecting the establishment of positive attitudes in teachers and students through training. The paper has four…

This book contains 105 articles dealing with games for use in the elementary or middle school mathematics classroom. All the articles originally appeared in the "Arithmetic Teacher" between 1956 and 1974. In this volume the papers are arranged in nine categories: (1) using games and puzzles, (2) whole numbers, (3) numeration, (4)…

This paper presents descriptions of a variety of learning activities suitable for the elementary grades. The activities were developed by teachers, and contributed by them to this volume. Some of the activities are short while others are intended to be carried out over several days. Paper-and-pencil activities, games, and projects involving making…

The use of 2 techniques for teaching the laboratory phase of a driver education program is compared and analyzed with respect to the ethnic background (Mexican American and Anglo), socioeconomic status, and sex differences of the students. The final sample consisted of 269 students from 7 secondary schools in El Paso, Texas. The basic difference…

As a supplement to Learning Activity Packages (LAP) on the time-space-matter subject, details are presented for self-directed activities. Major descriptions are given on the background of LAP characteristics, metric system, profile graph construction, spectroscope operation, radiant energy measurement, sunspot effects, density determination,…

Lists 40 things to do to have a safer chemistry laboratory. Discusses the evolution of these guidelines for schools from safety suggestions originally developed by industry. Categorizes the 40 steps into those requiring minimal cost and those requiring moderate expense. (TW)

Discusses the properties of carbon dioxide in its solid "dry ice" stage. Suggests several demonstrations and experiments that use dry ice to illustrate Avogadro's Law, Boyle's Law, Kinetic-Molecular Theory, and the effects of dry ice in basic solution, in limewater, and in acetone. (TW)

Proposes that preparative chemistry is an important and integral part of chemistry as a whole, and an excellent way to introduce students to descriptive chemistry. Provides an outline for students to follow for converting and transforming salts. Suggests a set of general guidelines for studying anion and cation transformations. (TW)

Discusses the need to develop laboratory practical examinations in chemistry which attempt to measure students higher order thinking skills and conceptual understanding rather than simply their laboratory skills. Examples of examination questions being used in general chemistry laboratory courses at the State University of New York at Cortland are…

Describes a chemistry experiment where an alkaline ice-cold permanganate solution is reduced by adding dropwise a cold diluted hydrogen peroxide solution. Outlines the course of the reduction through the various oxidation states of manganese with their characteristic colors. (TW)