1. Ball, D. L. (1996). Teacher learning and the mathematics reforms: What we think we know and what we need to learn. Phi Delta Kappa, 77, 500–508.
2. Ball, D. L., & Cohen, D. K. (1999). Developing practice, developing practitioners: Toward a practice-based theory of professional education. In L. Darling-Hammond & G. Sykes (Eds.), Teaching as the learning profession: Handbook of policy and practice (pp. 3–32). San Francisco: Jossey-Bass.
3. Borko, H., Jacobs, J., Eiteljorg, E., & Pittman, M. E. (2008). Video as a tool for fostering productive discussions in mathematics professional development. Teaching and Teacher Education, 24, 417–436.
4. Bottge, B. A. (2001). Reconceptualizing math problem solving for low-achieving students. Remedial and Special Education, 22, 102–112.
5. Brenner, M. E. (1998). Meaning and money. Educational Studies in Mathematics, 36, 123–155.