Cai, Jinfa, Morris, Anne, Hohensee, Charles, Hwang, Stephen, Robison, Victoria, Cirillo, Michelle, Kramer, Steven L., Hiebert, James, and Bakker, Arthur. Addressing the Problem of Always Starting Over: Identifying, Valuing, and Sharing Professional Knowledge for Teaching. Retrieved from https://par.nsf.gov/biblio/10189807. Journal for Research in Mathematics Education 51.2 Web. doi:10.5951/jresematheduc-2020-0015.

Cai, Jinfa, Morris, Anne, Hohensee, Charles, Hwang, Stephen, Robison, Victoria, Cirillo, Michelle, Kramer, Steven L., Hiebert, James, & Bakker, Arthur. Addressing the Problem of Always Starting Over: Identifying, Valuing, and Sharing Professional Knowledge for Teaching. Journal for Research in Mathematics Education, 51 (2). Retrieved from https://par.nsf.gov/biblio/10189807. https://doi.org/10.5951/jresematheduc-2020-0015

Cai, Jinfa, Morris, Anne, Hohensee, Charles, Hwang, Stephen, Robison, Victoria, Cirillo, Michelle, Kramer, Steven L., Hiebert, James, and Bakker, Arthur. "Addressing the Problem of Always Starting Over: Identifying, Valuing, and Sharing Professional Knowledge for Teaching". Journal for Research in Mathematics Education 51 (2). Country unknown/Code not available. https://doi.org/10.5951/jresematheduc-2020-0015. https://par.nsf.gov/biblio/10189807.

@article{osti_10189807,
place = {Country unknown/Code not available}, title = {Addressing the Problem of Always Starting Over: Identifying, Valuing, and Sharing Professional Knowledge for Teaching}, url = {https://par.nsf.gov/biblio/10189807}, DOI = {10.5951/jresematheduc-2020-0015}, abstractNote = {}, journal = {Journal for Research in Mathematics Education}, volume = {51}, number = {2}, author = {Cai, Jinfa and Morris, Anne and Hohensee, Charles and Hwang, Stephen and Robison, Victoria and Cirillo, Michelle and Kramer, Steven L. and Hiebert, James and Bakker, Arthur}, }