Blanton, Maria, Otálora, Yenny, Brizuela, Bárbara M., Gardiner, Angela Murphy, Sawrey, Katharine B., Gibbins, Aliska, and & Kim, Yangsook. Exploring Kindergarten Students’ Early Understandings of the Equal Sign. Retrieved from https://par.nsf.gov/biblio/10092189. Mathematical thinking and learning 20.3 Web. doi:10.1080/10986065.2018.1474534.

Blanton, Maria, Otálora, Yenny, Brizuela, Bárbara M., Gardiner, Angela Murphy, Sawrey, Katharine B., Gibbins, Aliska, & & Kim, Yangsook. Exploring Kindergarten Students’ Early Understandings of the Equal Sign. Mathematical thinking and learning, 20 (3). Retrieved from https://par.nsf.gov/biblio/10092189. https://doi.org/10.1080/10986065.2018.1474534

Blanton, Maria, Otálora, Yenny, Brizuela, Bárbara M., Gardiner, Angela Murphy, Sawrey, Katharine B., Gibbins, Aliska, and & Kim, Yangsook. "Exploring Kindergarten Students’ Early Understandings of the Equal Sign". Mathematical thinking and learning 20 (3). Country unknown/Code not available. https://doi.org/10.1080/10986065.2018.1474534. https://par.nsf.gov/biblio/10092189.

@article{osti_10092189,
place = {Country unknown/Code not available}, title = {Exploring Kindergarten Students’ Early Understandings of the Equal Sign}, url = {https://par.nsf.gov/biblio/10092189}, DOI = {10.1080/10986065.2018.1474534}, abstractNote = {}, journal = {Mathematical thinking and learning}, volume = {20}, number = {3}, author = {Blanton, Maria and Otálora, Yenny and Brizuela, Bárbara M. and Gardiner, Angela Murphy and Sawrey, Katharine B. and Gibbins, Aliska and & Kim, Yangsook.}, }