This resource houses links to a variety of sample math tasks aligned to the Common Core standard. Sources may include but are not limited to: Illustrative Mathematics, PARCC, Khan Academy, and the Illinois State Board of Education.
Determine whether a group of objects (up to 20) has an odd or even number of members, e.g., by pairing objects or counting them by 2s; write an equation to express an even number as a sum of two equal addends.
Farquer, Tim. "2.OA.3 Sample Tasks". OER Commons. Institute for the Study of Knowledge Management in Education, 27 Dec. 2012. Web. 19 Aug. 2019. <https://www.oercommons.org/authoring/1724-2-oa-3-sample-tasks>.
Farquer, T. (2012, December 27). 2.OA.3 Sample Tasks. OER Commons. Retrieved August 19, 2019, from https://www.oercommons.org/authoring/1724-2-oa-3-sample-tasks.