Espino, Nancy. "Comparing Numbers for Kindergarten". OER Commons. Institute for the Study of Knowledge Management in Education, 01 Jul. 2016. Web. 30 Jun. 2024. <https://oercommons.org/authoring/14575-comparing-numbers-for-kindergarten>.
Espino, N. (2016, July 01). Comparing Numbers for Kindergarten. OER Commons. Retrieved June 30, 2024, from https://oercommons.org/authoring/14575-comparing-numbers-for-kindergarten.