This study identifies the most common biological concepts presented in elementary science textbooks in Taiwan. The concepts focus on living things, animals, and plants in grades one through four. Three major areas of concern are: attributes of the three related concepts; development of the concepts focusing on content organization and their…

The purpose of this study was primarily to explore the effects of constructivist-oriented instruction on fifth graders' cognitive structures about biological reproduction. Furthermore, such effects on different science achievers were also investigated. The subjects of this study were 69 eleven year olds in Taiwan, who were assigned to either a…