Science Curriculum Improvement Study (SCIS) students in grades 4-6 were used to investigate ecological concept formation. Researcher-designed, multiple-choice and free-sort tasks were administered. Statistics utilized included analysis of variance, Spearman correlation, multiple regression, frequency distributions, and latent partition analysis.…

This study is part of a larger study of teachers' use of curriculum materials in planning and teaching fifth-grade science. The study focused on one of nine teachers observed teaching "Communities," an activity-based unit from the SCIIS science program (a revision of the original Science Curriculum Improvement Study).…