Defines five levels between concrete and formal operation in the development of the concept of controlling variables. The sample, methodology and research on which the work is based is described in SE 519 500. (CP)

Cites research findings to refute Piaget's contention of stages of cognitive development. Advocates continuous cognitive differentiation as a model. (CP)

The relationships between 54 sixth grade students' performance on the Piagetian balance beam and bending rods tasks were correlated with their answers to value-laden questions. Significant positive relationships were observed. Implications from these findings for science instruction are discussed. (CP)

Encourages the examination of incorrect responses given by students to questions in the belief that the responses will reveal information concerning subjects' logical thinking and concept-forming abilities. College students' incorrect responses to physical science questions are analyzed. (CP)

Reports on the development and validation of a Likert-type instrument to assess the attitudes and opinions of high school chemistry students, chemistry teachers, and university scientists toward the behavioral objectives of laboratory work in high school chemistry instruction. Ratings of a sample of secondary students, teachers, and scientists are…

Research hypotheses versus statistical hypotheses, null hypotheses and alternative hypotheses, and statistical significance versus practical significance are described and illustrated. (CP)

Reports a study made to determine the perceptions of secondary science teachers with respect to their preferences for classroom instructional approaches and management strategies. (SL)

Reports results of a survey of teachers' direct contact and experience with exceptional students in their classes. Results indicate the majority of teachers have had some experience. (SL)

Reviews techniques available for measuring student skills with the processes of science at the elementary and secondary levels. (SL)

Reviews possible directions in elementary school science education for the next few years. (SL)

Presents findings of a study on the visual perceptual dimension of cognitive structure as it relates to achievement in college biology. Results indicate a possibility of using visual recall probes for the early detection of learning differences related to achievement. (SL)

Reviews a project designed to prepare participants to assume leadership roles in the implementation of the Intermediate Science Curriculum Study (ISCS). (SL)

Reports on a study to determine if teachers presenting science classes to more than one elementary class use different teaching practices than do those teachers who teach only their own class. (SL)

Reports a study to identify and validate observable competencies for prospective high school science teachers. (SL)

Reports a study using the perceptions of science supervisors to determine those competencies that all secondary school teachers should possess. (SL)