@article{blanton_berenson_norwood_2001, title={Using classroom discourse to understand a prospective mathematics teacher's developing practice}, volume={17}, ISSN={["0742-051X"]}, DOI={10.1016/S0742-051X(00)00053-6}, number={2}, journal={TEACHING AND TEACHER EDUCATION}, author={Blanton, ML and Berenson, SB and Norwood, KS}, year={2001}, month={Feb}, pages={227–242} }
 @article{hollar_norwood_1999, title={The effects of a graphing-approach intermediate algebra curriculum on students' understanding of function}, volume={30}, ISSN={["0021-8251"]}, DOI={10.2307/749612}, number={2}, journal={JOURNAL FOR RESEARCH IN MATHEMATICS EDUCATION}, author={Hollar, JC and Norwood, K}, year={1999}, month={Mar}, pages={220–226} }