1. Characterizing college science instruction: The Three-Dimensional Learning Observation Protocol
2. Chemistry Education Research—From Personal Empiricism to Evidence, Theory, and Informed Practice
3. S. R. Singer, N. R. Nielsen and H. A. Schweingruber, Discipline-Based Education Research, (The National Academies Press, Washington DC, 2012).
4. National Research Council, Discipline-Based Education Research (The National Academies Press, Washington DC, 2012).
5. NGSS Lead States, Next Generation Science Standards: For States, By States (The National Academies Press, Washington DC, 2013).