Polly, Drew. "Gr 3 C4 Two-Step Word Problem Set". OER Commons. Institute for the Study of Knowledge Management in Education, 03 Nov. 2019. Web. 24 Nov. 2024. <https://goopennc.oercommons.org/authoring/2128-gr-3-c4-two-step-word-problem-set>.
Polly, D. (2019, November 03). Gr 3 C4 Two-Step Word Problem Set. OER Commons. Retrieved November 24, 2024, from https://goopennc.oercommons.org/authoring/2128-gr-3-c4-two-step-word-problem-set.