Reprinted with permission from Kindling the Fire: Why I Do What I Do, copyright (May 2019), by the National Council of the Teachers of Mathematics (NCTM). All rights reserved.
Mathematics Teaching in the Middle School, Vol. 24, No. 7, May 2019
Reprinted with permission from Prove It to Me!, copyright (May 2019), by the National Council of the Teachers of Mathematics (NCTM). All rights reserved.