# References

References

Alabama State Department of Education. (2015). *2015 Revised Alabama course of study: *

*Mathematics*. Montgomery, AL: Author.

Dick, T. P., & Hollebrands, K. F. (2011). *Focus in high school mathematics: Technology to*

*support reasoning and sense making*. Reston, VA: National Council of Teachers of

Mathematics.

Dunbar, K. (n.d.). Triangle Centers. Retrieved September 19, 2016, from

http://jwilson.coe.uga.edu/emat6680/dunbar/assignment4/assignment4_kd.htm

Hollebrands, K. & Lee, S. (2011). *Preparing to teach mathematics with technology: An*

*integrated approach to geometry*. Atlanta, GA: Kendall Hunt Publishing.

Leinwand, S., Brahier, D., Huinker, D., Berry, R., Dillon, F., Larson, M., . . . Smith, M.

(2014). *Principles to action: Ensuring mathematical success for all* [E-book]. Reston,

VA: The National Council of Teachers of Mathematics.

Skemp, R. (1978). Relational understanding and instrumental understanding.

*Arithmetic **Teacher*, 152-161.