Students using the Science Curriculum Improvement Study curriculum were informally observed to be incapable of defining a system although they could perform related tasks. A study was performed to determine students' understanding of various aspects of systems. (SD)

Describes OIC philosophy and development of SCIS, the Science Curriculum Improvement Study, materials and program. (CP)

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)

Classificatory behavior of 41 fourth graders enrolled in a science program at the National Zoological Park in Washington, D.C. was assessed on an instrument adapted from Piaget's interviews with children on class inclusion. Developmental levels were related to student performance in the program. Data analysis shows that students with a high…

Examines whether participation in physical experiments together with social interaction with adults and school-mates favor the development of causal knowledge and the understanding of a complex physical subject. Concludes that the treatments can lead students to give up pre-causal explanations and to resort to physical ones. (Author/YP)

The purposes of this study were to investigate: (1) effectiveness of three small group teaching methods on the acquisition and retention of seriation abilities; (2) transfer of seriation abilities using the three treatments; and (3) relationship between visual and nonvisual seriation abilities. One hundred twenty first grade Canadian students were…