Science curriculum and instruction in K-12 settings in the United States is currently dominated by an emphasis on the science standards movement of the 1990s and the resulting standards-based high-stakes assessment and accountability movement of the 2000s. We argue that this focus has moved the field away from important philosophical…

Reviews research in the area of scientific classification of botany concepts. The acquisition, transfer, and ability to use cognitive skills were investigated. (CP)

Randomly selected high school students (n=13) who studied an ecology unit were interviewed, and narrative data analyzed for changes in knowledge schema. Data support the current theory that the amount and quality of prior knowledge substantially influence gains in new knowledge and are closely linked to a capacity to apply higher-order cognitive…

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)