Delete "became" and replace with "transformed them into"

Delete text "the inclusion of"

Insert text: "(and to what degree)" before period

Delete

Delete ","

Delete "their" and replace with "his"

delete "the"

Need to be added: Blanton, M. L., Berenson, S. B., & Norwood, K. S. (2001).Exploring a pedagogy for the supervision of prospective mathematics teachers. Journal of Mathematics Teacher Education 4, 177 - 204. https://doi.org/10.1023/A:1011411221421

Loughran, J., & Menter, I. (2019). The essence of being a teacher educator and why it matters. Asia-Pacific Journal of Teacher Education, 47(3), 216–229. https://doi.org/10.1080/1359866X.2019.1575946

(2010b)