1. Department of Curriculum, Instruction, and Special Education and Center for the Advanced Study of Teaching and Learning–Higher Education, University of Virginia, Charlottesville, VA 22904–4261, USA.
2. Cincinnati Children’s Hospital and Medical Center, Cincinatti, OH 45229, USA.
3. Office of Research and Graduate Education, University of South Carolina, Columbia, SC 29208, USA.
4. Center for the Advanced Study of Teaching and Learning–Higher Education, University of Virginia, Charlottesville, VA 22904–4261, USA.
5. Department of Educational Leadership and Policies, University of South Carolina, Columbia, SC 29208, USA.
6. Center for Teaching and Learning, University of Texas–Austin, Austin, TX 78713–7246, USA.
7. Department of Mathematics, Zayed University, Abu Dhabi, United Arab Emirates.