Presents a comparison of Thai and American fifth and eighth

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)

Discusses the development and analysis of Raven's Test of Logical Operations which uses the same problem solving rules as Piaget's. Indicates that the test is sensitive to the determination of students' difficulties with specific types of reasoning patterns. (CC)

Investigates the effects of high school chemistry experiences on the use of Piaget's operative structures. Reports that students who took chemistry scored higher than those who did not on a test of Piaget's operative comprehension. (GA)

Determines the relationships among Piaget's construct of operative comprehension, self-concept, and science achievement, and reports a positive correlation between them. (GA)

Investigates the relationships between levels of cognitive complexity and three levels (graphic, formal, and inferred) of modeling complexity in community college students. (GA)

Describes the development of an instrument which is: (1) is capable of administration to students in grades 6-14; (2) requires the examinee to construct a conceptual answer from information provided; (3) requires the examinee to use the seven major logical operations (classification, seriation, logical multiplication, compensation, ratio,…

The authors employed the Raven Test of Logical Operations (RTLO) to assess development of cognitive structure for subjects of ages 8 to 19. Their conclusions support in part the development sequence described by Piaget. Lack of hierarchical order in some cognitive operations may indicate limitation of the instrument. (Author/EB)

Examines the prevailing system for the training of science teachers, particularly for the primary and secondary levels. Outlines the entrance requirements and curriculum for each level. Analyzes the system and offers suggestions for general improvement. (GS)

Discusses a study which compared differences in ratio construction made by high school freshman and junior students. Reports that more freshmen than juniors selected solutions involving one variable, whereas juniors chose solutions that coordinated two variables in a mathematical or verbal rule. Reviews implications in problem solving and concept…

Proposes that an examination of the history of the development of science concepts can reveal conceptual difficulties and guide the development of instructional methods where the student is helped to actively organize information so that he is involved in formulating the concept.'' (AL)