Presented is a secondary level physics unit which introduces students to electrical resistance in series and parallel combinations, use of the voltmeter and ammeter, wiring simple circuits, and writing scientific reports. (SL)

Describes a low priced ripple tank with accessories for use with an overhead projector as well as the assembly of a variable speed wave source. Photographs are included. (GH)

Introductory science has become a discovery course for the students at Phillips Exeter Academy (New Hampshire), who are above average in ability and motivation. The philosophy of the course is that it should serve a more humanizing function than the preparation of young technicians, and that this function is as important for the future scientist…

Fourteen basic experiments in mechanical engineering, intended for use at the sophomore level, are presented. The experiments are described as open-ended in order to give students the opportunity to discover the importance of stable operating conditions. The concept of experimentation is introduced and there is an interrelation between theory and…

Reported is a study to investigate the effects of a free-choice program on children's ability to interpret experiments, design simple investigations, and recognize variables that could affect the outcome of observed events. (Author/SA)

This study describes children's learning in a free-choice environment. Teacher controlled instruction is minimized and children participate in a wide variety of science activities with equipment that is selected by each individual student. The study occurs within an elementary school's Science Enrichment Center and the children work on the…

An experimental solar heating system heats five modular classrooms at the Fauquier County High School in Warrenton, Virginia. The present report covers the operation, maintenance, and modifications to the system over the 1974-75 and 1975-76 heating seasons. The solar system has shown the capability of providing essentially 100 percent of the…

This report covers a two-year and seven-month solar space heating and cooling experiment conducted at the Timonium Elementary School, Timonium, Maryland. The system was designed to provide a minimum of 50 percent of the energy required during the heating season and to determine the feasibility of using solar energy to power absorption-type…

This report documents the performance and conclusions of a 13-month period of monitoring the performance of the experimental solar heating and cooling system installed in the George A. Towns Elementary School, Atlanta, Georgia. The objectives of the project were to (1) make a significant contribution to solar design, technology, and acceptability;…

This report describes National Institute of Health policies on animal welfare, the 1976 amendment to the Animal Welfare Act, and relevant portions of the Endangered Species Act of 1973. It is divided into four sections on the following topics: (1) laboratory animal management; (2) laboratory animal quality and health; (3) institutional policies;…

FROM 1962 TO 1963, THE JAPAN BROADCASTING CORP. CONDUCTED A STUDY TO MEASURE THE EFFECTS OF INSTRUCTIONAL TELEVISION ON PRIMARY SCHOOL CHILDREN IN ISOLATED AREAS OF JAPAN, WHO HAD SCORED BELOW THE NATIONAL AVERAGE ON NATIONWIDE ACHIEVEMENT TESTS. 4 PRIMARY SCHOOLS WERE CHOSEN FOR THE EXPERIMENT. THE STUDENTS WERE PRETESTED FOR INTELLIGENCE,…

TWO GRADE 9 MATH CLASSES (41 STUDENTS) OF LOW ABILITY WERE EACH EXPOSED TO LINEAR AND SELF-DIRECTED (COMPLETE FREEDOM AS TO EXTENT, SEQUENCE, AND METHOD OF STUDY) PROGRAMS ON SET THEORY AND PERMUTATIONS. ANALYSIS OF VARIANCE FOR ACHIEVEMENT TEST SCORES AND MEAN RETENTION SCORES SHOWED NO SIGNIFICANT EFFECT OF PROGRAM TYPE OF STUDY TIME.…

TO COMPARE CONVENTIONAL AND PROGRAMED INSTRUCTION ON TEACHING AUDITORY DISCRIMINATION OF THE "S" PHONEME, 20 LESSONS CONTAINING STIMULUS AND REPEAT ITEMS WERE RECORDED ON A COMMERCIAL MULTI- CHANNEL DEVICE THAT ALLOWS CONTINUOUS ADJUSTMENT ON THE BASIS OF RESPONSE. THE 40 GRADES TWO-FOUR PARTICIPANTS, MATCHED ON AGE, SEX, AND IQ, WERE…

GOALS OF THIS EXPERIMENT WERE TO GATHER COMPARATIVE DATA ON STUDENT ACHIEVEMENT IN TWO CLASSROOM ENVIRONMENTS, STUDENT AND FACULTY ATTITUDES, AND PERSONNEL AND TECHNICAL COSTS. CHI SQUARE ANALYSIS OF FINAL EXAMINATION SCORES SHOWED THAT THE CLASSROOM GROUP LEARNED SIGNIFICANTLY MORE THAN THE THEATER GROUP, BUT THE DISTRIBUTION OF COURSE GRADES DID…

THE AIM OF THIS RESEARCH PROJECT WAS TO IDENTIFY THE ARTICULATORY INACCURACY PROFILES OF CHILDREN ACCORDING TO THE ETIOLOGY OF THE CONDITION PRODUCING THE SPEECH DIFFICULTY. DURING THE FIRST PHASE OF THE RESEARCH, A BATTERY OF TESTS TO PROVIDE INFORMATION ON THE ARTICULATORY PATTERNS, VERBAL INTELLIGENCE, AND AUDITORY PERCEPTION OF NORMAL CHILDREN…