References

Karp, Karen S., Sarah B. Bush, and Barbara J. Dougherty. 2014. “13 Rules That          Expire.” Teaching Children Mathematics 21 (August): 18–25

https://www.nctm.org/Publications/Teaching-Children-Mathematics/Blog/13-Rules-That-Expire/ 

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Karp, Karen S., Sarah B. Bush, and Barbara J. Dougherty.2015. “12 Math Rules That Expire in the Middle Grades.” Mathematics Teaching in the Middle School 21 (November): 208–15.

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Karp, K. S., Bush, S. B., & Dougherty, B. J. (2016). Establishing a mathematics whole-school agreement. National Council of Teachers of Mathematics,23(2). Retrieved from https://www.nctm.org/Publications/Teaching-Children-Mathematics/2016/Vol23/Issue2/Establishing-a-mathematics-whole-school-agreement/.

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