Adding with Number Strings (Waldron)

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The lesson focuses on 2.OA.1 as students add using number strings. Students discuss and share strategies for thinking.

This video was annotated using this version of the Instructional Practice Guide (IPG). A current version of the IPG is available here.

Adding with Number Strings (Waldron)

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5:31 – 8:01
Core Actions & Indicators: 3A

3A:  Students share their thinking and strategy of problem solving to peers.  Students agree or disagree with peer and ask questions. 

8:16 – 13:21
Core Actions & Indicators: 2C

2C:  After a student shares her solution method, she asks the class if someone else has another method.  Another students explains how she got her answer. 


16:28 – 16:29
Core Actions & Indicators: 3G

3G:  Teacher asks for answer to word problem.  She asks if anyone else got a different answer.  Two answers were given.  Students discuss how they solved the problem.  The teacher asks if someone wants to revise their answer.  The student revises her answer after discussing with peer.