Learning to plan modeling-based investigations (MBIs) presents significant challenges for pre-service elementary teachers. Although they understand disciplinary core ideas and modeling practices, they address both as competing learning goals and, as novices, they have not experienced how to structure MBIs for their future students. In the context…

Empirical investigations on students' conceptions of cell biology indicate major misunderstandings of scientific concepts even after thorough teaching. Therefore, the main aim of our research project was to investigate students' difficulties in learning this topic and to study the impact of learning activities on students' conceptions. Using the…

In a research collaboration with government biologists and university educators, K-12 students in the Cle Elum-Roslyn (CER) School District in eastern Washington are investigating where cougars ("Puma concolor") go when their habitat gives way to new housing developments. Now in its seventh year, Project Cougars and Teaching (CAT) is taking the…

Presents results of a two-year study regarding factors causing student difficulties in performing investigative activities in a beginning biology course. Also investigates the usefulness of written guidelines in alleviating these difficulties. A model for student investigations is proposed. (CS)