Summarizes Piagetian developmental psychology, and describes a study in which trainee elementary school teachers administered Piagetian tasks to pupils. During this time the teachers were being instructed in the development of children's thought processes. Results support the continued use of the method. (AL)

Reports on an investigation designed to study the ability of 11 to 17 year old students to control variables when presented with science problem situations in three types of question formats (free response, multiple choice, screen question). (HM)

Questions Piagetian theory that dismisses the idea of accelerating cognitive development through classroom activities. (CP)

Reports a procedure for training fifth and seventh grade students to substantially improve their understanding and use of controlled experimentation procedures. (SL)

In a longitudinal study, third grade children using Science Curriculum Improvement Study (SCIS) materials were compared with comparable non-SCIS children. Data analysis showed SCIS children superior to non-SCIS children. (PS)

Examines the relationships between mental maturity and achievement in three types of science concepts-classificational, correlational, and theoretical. (AL)

Advocates the educational theories of David Ausubel as a basis on which to build science and mathematics curricula and instructional procedures. Offers interpretations of Piaget's conservation tasks in Ausubelian theory. (CP)

Sixty-one Japanese kindergarten children were pretested on their concept of speed; approximately half of the children (experimental group) were then given a demonstration of visual speed, and the entire group was posttested. Concludes that the experimental group could acquire the concept of speed significantly better than the control group. (MLH)

The author examines Novak's position that science and mathematics educators should discard Piaget's theory of intellectual development in favor of Ausubel's theory of meaningful learning as a guide for teaching practice and research. (PB)

In this article a general model of mastery learning is developed and discussed using data gathered from operating applications of the mastery model in college classrooms. Suggestions for the implementation of the mastery model in the high school are also presented. (HM)

Investigated were operative comprehension differences between 239 sixth and eighth grade pupils in activity oriented science programs and 249 students in a textbook oriented science program. Results indicated no differences among sixth graders, but activity oriented eighth graders scored higher than textbook oriented students. (SL)

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)

Presents a general theory of instruction which suggests that the teacher's function is to create a new environment in which effective instructed learning occurs. Illustrations for this theory with reference to science instruction and a review of prior statements identifiable as theory are also included. (HM)

Attempts to analyze the effects of advance organizers on an environmental education unit, assess retention of the instructional material one year later, and determine if changes in perceptions of a woodland occurred. (GA)

Investigated was the retention of the skills of observation and comparison in junior high school students in a rural junior high school and an urban setting. Data obtained showed a consistently high degree of retention for both skills (although degree of retention was higher for observation than for comparison skills) regardless of treatment…