The purpose of this qualitative action research study was to describe a middle-level science teacher's transition to an inquiry-based, progressivist, student-centered model from a traditional, teacher-centered model as well to document the student-participants' perceptions of the new model. The study population consisted of one-hundred…

In many countries around the world, there has been an increasing emphasis on improving science education. Recent reform efforts in the USA call for teachers to integrate scientific and engineering practices into science teaching; for example, science teachers are asked to provide learning experiences for students that apply crosscutting concepts…

We use a construct-based assessment approach to measure learning progression of energy concepts across physical, life, and earth science contexts in middle school grades. We model the knowledge integration construct in six levels in terms of the numbers of ideas and links used in student-generated explanations. For this study, we selected 10 items…