In his last book, "Toward a Logic of Meanings" (Piaget & Garcia, 1991), Jean Piaget describes how thought can be categorized into a form of propositional logic, a logic of meanings. The intent of this article is to offer this analysis by Piaget as a means to understand the language and teaching of science. Using binary propositions, conjunctions,…

A recently developed and validated group assessment instrument, the Piagetian Logical Operations Test (PLOT), is described focusing on how teachers can use PLOT in improving learning in science classrooms. PLOT is an untimed 51-item instrument consisting of 13 content, 18 decision, and 20 reason items. (MP)

The goal of this article is to identify and disseminate several important messages from recent research on formal thought. Reasoning by adolescents, measurement of Piagetian formal reasoning, the importance of additional factors, stages, and working memory are discussed. (MNS)

Reports research supporting the hypothesis that concrete-operational college students playing the game Master Mind with an observer where there is verbal interaction designed to stimulate thinking about the problem-solving situation will show greater cognitive growth than subjects not playing the game. Implications for science instruction are…

This study explored questions about the effect of lesson structure and cognitive development on science achievement of 42 students in grades four and five in British Columbia. Increased lesson structure did not significantly increase achievement, and interaction effects were generally nonsignificant. Conservation ability significantly affected…

This second part of a review on teaching science to middle school students notes Piagetian ideas related to the learning of these students and focuses on the curriculum and needs of students. (MNS)

Early childhood education today is seen as multifaceted, with its philosophical roots involving three major views: (1) Behaviorist-Environmentalist; (2) Maturationist; and (3) Comprehensive-Interactionist. How these views translate into educational practice is detailed. (MP)

Discusses the role constructivist learning theory is taking in the change of teaching strategies in the science laboratory. The laboratory moves from a place where knowledge is verified to one where relationships are actively investigated through hands-on, cooperative activities. (MDH)

Outlines the rationale, resources, and techniques for teaching K-12 physical science via toys. Includes 65 references and a list of 9 mail order suppliers of scientific toys. (MDH)

This study was conducted to determine the cognitive demand made by an eighth-grade science textbook. Reasoning patterns and science concepts were listed and compared. Concrete reasoning was required more often than formal reasoning, but some points of difficulty for students who are not formal reasoners were noted. (MNS)

Reports an experimental study of 80 ninth grade biology students randomly assigned to treatment and control groups to determine whether the use of human examples in instructional strategies on Mendelian genetics increases acquisition and retention of genetics concepts. Results indicate that use of human examples in contrast to traditional examples…

Control group students (receiving descriptive, non-inquiry science) and experimental group students (using Science Curriculum Improvement Study-SCIS "Interaction and Systems" materials) were later combined in grade 4 for instruction with SCIS "Subsystems and Variables" materials. Results show similar difficulties in learning…

Raises questions regarding what students are perceiving when concrete models are used to represent abstract scientific concepts. Discussion of several exploratory investigations on the role of models in science teaching is presented in three areas: (1) interactions with students; (2) effectiveness of models; and (3) spatial ability and models.…

Presents a study to evaluate the cognitive level of questions in middle school science textbooks. Questions and their location were coded from six randomly selected chapters in eight middle school science textbooks. Results indicated that input level questions were the dominant question type, probably leading to students functioning at lower…

Studies the scientific curiosity and inquiry of 226 high school students from grades 10 to 12 who were studying the Israeli adaptation of the Biological Science Curriculum Studies (BSCS) program in eleven different schools representing city and Kibbutz Schools in Israel. (HM)