Report of a lecture delivered by Dr. Patricia S. Davidson in a Subject-Field Meeting, Annual Conference of the National Association of Independent Schools, February 1969.

17p.

This student's manual covers analytical methods for residual chlorine and turbidity. Topics include sample handling, permissable concentration levels, substitution of residual chlorine for bacteriological work, public notification, and the required analytical techniques to determine residual chlorine and turbidity. The publication is intended for…

This instructor's guide presents analytical methods for residual chlorine and turbidity. Topics include sample handling, permissable concentration levels, substitution of residual chlorine for bacteriological work, public notification, and the required analytical techniques to determine residual chlorine and turbidity. This publication is intended…

A SCIENCE UNIT ON MEASUREMENT IS PRESENTED. INCLUDED ARE AN INTRODUCTION TO THE METRIC SYSTEM AND SOME TOOLS OF MEASUREMENT. STUDENTS ARE GIVEN A HOMEMADE SYSTEM OF MEASUREMENT WHICH UTILIZES A GRAIN OF RICE AS ITS BASIC UNIT. THE STUDENTS ARE GIVEN EXPERIENCES WITH THE METRIC SYSTEM. THROUGH THESE EXPERIENCES, THE STUDENTS SEE THE NEED FOR…

THE USE OF THE LANGUAGE LABORATORY HAS GIVEN MANY THOUSANDS OF INDIVIDUALS GOOD LISTENING AND SPEAKING PRACTICE AND HAS BECOME AN EFFECTIVE LEARNING TOOL. THE BASIC PIECE OF EQUIPMENT OF THE LANGUAGE LABORATORY IS THE TAPE RECORDER-AND-PLAYBACK, DESIGNED TO BE USED WITH AUDIOPASSIVE STUDY, AUDIOACTIVE STUDY, AUDIOACTIVE-COMPARATIVE STUDY, AND…

A SCIENCE UNIT ON ORGANIZATION IS PRESENTED. THE OBSERVATION AND CATEGORIZATION OF LIVING THINGS ARE EMPHASIZED. STUDENTS ARE REQUIRED TO GATHER SPECIMENS OF PLANT AND ANIMAL LIFE AND TO LOOK FOR DIFFERENCES AND SIMILARITIES AMONG THEM. THIS COLLECTING AND GROSS SORTING OF SPECIMENS ARE ENCOURAGED THROUGH LABORATORY EXERCISES. DATA SHEETS ARE USED…

INSUFFICIENT OBJECTIVE EVIDENCE EXISTS AS TO THE BEST WAY TO USE LANGUAGE LABORATORIES IN TEACHING FOREIGN LANGUAGES. THIS STUDY WAS AN ATTEMPT TO DETERMINE WHAT PROPORTION OF INSTRUCTIONAL TIME SHOULD BE ALLOTTED TO THE LANGUAGE LABORATORY WHEN 80 PERCENT OF THE LABORATORY TIME IS AUDIOACTIVE AND 20 PERCENT IS AUDIOACTIVE-RECORD-PLAYBACK. ONE…

ALTHOUGH THE VALUE OF THE LANGUAGE LABORATORY IN FOREIGN LANGUAGE PROGRAMS IS WELL ESTABLISHED IN THE UNITED STATES, THE NEED FOR SUCH LABS IN SMALL "TEACHERS OF ENGLISH TO SPEAKERS OF OTHER LANGUAGES" (TESOL) PROGRAMS IS NOT YET SO WELL RECOGNIZED. VALID OBJECTIONS SUCH AS GREAT INITIAL EXPENSE AND LACK OF SPECIAL PREPARED MATERIALS HAVE BEEN…

The paper discusses the steps a teacher should follow in organizing a learning center. Considered are the two types of learning centers (curriculum and skill area centers), skill objectives, and criteria for selecting materials and equipment. (SBH)

Evaluated was achievement by college freshman students in a chemistry laboratory course. Twenty-eight sections, a total of 292 students, were grouped into six sections with written direction in a structured laboratory experiment schedule, six sections with verbal direction in a structured schedule, and sixteen sections with an unstructured…

The Pennsylvania Advancement School operates as a laboratory for stimulating positive change in the educational community through its programs for urban students and teachers. Sixth to eighth grade boys performing below potential in Philadelphia schools are brought to the school to participate in instructional projects during at least one 14-week…

A simple but physically realistic model is shown to be adequate for estimating long-term average pollutant concentrations due to area sources in cities. In this model, the surface concentration is directly proportional to the local area source strength and inversely proportional to the wind speed. The model performs nearly as well as much more…