David Rock, and Mary K. Porter. “Palette of Problems.” Mathematics Teaching in the Middle School, vol. 17, no. 5, 2012, pp. 272–273., www.jstor.org/stable/10.5951/mathteacmiddscho.17.5.0272. Accessed 22 Jan. 2021.
David Rock, & Mary K. Porter. (2012). Palette of Problems. Mathematics Teaching in the Middle School, 17(5), 272-273. doi:10.5951/mathteacmiddscho.17.5.0272
David Rock, and Mary K. Porter. "Palette of Problems." Mathematics Teaching in the Middle School 17, no. 5 (2012): 272-73. Accessed January 22, 2021. doi:10.5951/mathteacmiddscho.17.5.0272.
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