Learning Domain: Operations and Algebraic Thinking
Standard: Add and subtract, within 20, using strategies such as: Counting on; Making ten; Decomposing a number leading to a ten; Using the relationship between addition and subtraction; Using a number line; Creating equivalent but simpler or known sums.
Learning Domain: Operations and Algebraic Thinking
Standard: Determine whether a group of objects, within 20, has an odd or even number of members by: Pairing objects, then counting them by 2s; Determining whether objects can be placed into two equal groups; Writing an equation to express an even number as a sum of two equal addends.
COKER, DAWNE. "T4T Representations for Addition within 20". OER Commons. Institute for the Study of Knowledge Management in Education, 10 Jul. 2019. Web. 22 Dec. 2024. <https://goopennc.oercommons.org/authoring/886-t4t-representations-for-addition-within-20>.
COKER, D. (2019, July 10). T4T Representations for Addition within 20. OER Commons. Retrieved December 22, 2024, from https://goopennc.oercommons.org/authoring/886-t4t-representations-for-addition-within-20.