This manual provides information needed to meet specific standards for certification as a pesticide applicator. The text is directed to individuals working in demonstration and research pest control who evaluate, provide and disseminate information on pest control procedures. Guidelines for designing and conducting a research experiment in…

This article attempted to show that the research on teaching methods has been built on assumptions of additivity not only in practice but also at the meta-theoretical level and some implications of the acknowledging of interactions were taken up. (Author/RK)

Author reported on the burgeoning of psychology as a school subject. (Editor/RK)

A description of an experimental program using radio for instruction. (HB)

A computer-linked pupil-simulator which provides student-teachers with pre-classroom teaching experience is discussed. (Author)

Beginning teachers of scientific technical writing often have little background knowledge in the sciences; thus, they may encounter difficulty in dealing with technical reports. To achieve clear explanations of the effects of scientific experiments, scientific writers need to know the following general principles: (1) the function of all the…

THE PRINCIPLES OF ATOMIC STRUCTURE WHICH ARE STRESSED ARE THAT ATOMS ARE MADE UP OF A NUCLEUS WITH A POSITIVE CHARGE, SURROUNDED BY ELECTRONS WITH A NEGATIVE CHARGE, AND THAT THERE IS NO CHANGE IN THE ATOM WHEN THE POSITIVE AND NEGATIVE CHARGES ARE EQUAL. EXPERIMENTS ILLUSTRATE THAT CURRENT ELECTRICITY IS ACTUALLY ELECTRONS IN MOTION, THAT THERE…

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…

TWO HYPOTHESES RELATED TO HYPOTHESIS INTERFERENCE IN CONCEPT PERFORMANCE OF YOUNG CHILDREN WERE TESTED/ (1) STUDENTS MAKE MORE CLASSIFICATIONS WHEN STIMULUS OBJECTS ARE PRESENTED SEQUENTIALLY THAN WHEN STIMULUS OBJECTS ARE PRESENTED SIMULTANEOUSLY, AND (2) REDUCING THE NUMBER OF STIMULUS OBJECTS INCREASES CLASSIFICATION SPEED. MATCHED ON THE BASIS…

The beta coefficient of an intermediate variable in a causal direction remains relatively constant as other system variables are introduced and controlled in stepped regression, whereas that in the acausal direction changes noticeably. Normalized random numbers (200x5) were generated and substituted in interdependent equations to produce five…