Students' inaccurate ideas about what is represented by chemical equations and concepts underlying stoichiometry are well documented; however, there are few classroom-ready instructional solutions to help students build scientifically accurate ideas about these topics central to learning chemistry. An intervention (two inquiry-based activities)…

This study investigated the effect of two models of professional development concerning Assessment for Learning on teacher perception of the effectiveness of Assessment for Learning strategies and student achievement as measured by standardized Georgia End of Course Tests. The study hypothesized that a positive relationship exists between teacher…