1Cobb, P., Jackson, K., Smith, T., Sorum, M. & Henrick, E. Design Research with Educational Systems: Investigating and Supporting Improvements in the Quality of Mathematics Teach- ing and Learning at Scale. In B. J. Fishman, W. R. Penuel, A.R. Alien & B. H. Cheng (Eds.), Design Based Implementation Re- search: Theories, Methods, and Exemplars. National Society for the Study of Education Yearbook.[R]New York: Teachers College, 2013,112(2).
2Cobb, P., & Smith, T. The Challenge of Scale: Designing Schools and Districts as Learning Organizations for Instructional Improvement in Mathematics. In K. Krainer, & T.Wood (Eds.), International Handbook of Mathematics Teacher Educa- tion: Vol. 3. Participants in Mathematics Teacher Education: In- dividuals, Teams, Communities and Networks. Rotterdam, The Netherlands: Sense,2008.
3http://peabody.vanderbih.edu/docs/pdf/tl/IQA_RaterPack- et_LessonObservations Fall 12.pdf.
