D, Carolyn. "Multiplying Whole Numbers: Dream Vacation". OER Commons. Institute for the Study of Knowledge Management in Education, 01 May 2017. Web. 12 Jul. 2024. <https://oercommons.org/authoring/21707-multiplying-whole-numbers-dream-vacation>.
D, C. (2017, May 01). Multiplying Whole Numbers: Dream Vacation. OER Commons. Retrieved July 12, 2024, from https://oercommons.org/authoring/21707-multiplying-whole-numbers-dream-vacation.