Objective: Count on using the number path to find an unknown part. Day 2
In these concluding lessons, students use the number path, as pictured to the right, in order to find one part, count on to the total, and determine the number of counts it took to get to that total from the part (1.OA.5). The teacher engages students in deep discussion about these strategies as they relate to the contextualized situations of story problems, ensuring that students build a solid conceptual understanding of why and how one utilizes counting on to solve subtraction.
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