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)

This study attempted to determine at what grade levels children develop the ability to combine and control variables, the effect of the elementary science program on this development, and the relationship between a child's ability to control variables and his ability to form combinations of variables. (GS)

Reports results supporting the theoretical rationale that there are certain cognitive skills, including data interpretation, identification of assumptions and hypotheses, and controlling of variables, that appear to be necessary for successful understanding of the heterotroph hypothesis, as presented in the BSCS Blue Version. Implications for…

Investigated the effects of the reading and logical thinking abilities of average and below-average students in urban high schools on learning outcomes of using the Intermediate Sciences Curriculum Study (ISCS) level and materials. (HM)