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Lesson Plan

Sums!: Trajectory of Understanding

teaches Common Core State Standards 111.3.3.D
teaches Common Core State Standards 111.4.4.A
teaches Common Core State Standards CCSS.Math.Practice.MP2
teaches Common Core State Standards CCSS.Math.Content.2.OA.B.2
teaches Common Core State Standards CCSS.Math.Practice.MP7
teaches Common Core State Standards CCSS.Math.Practice.MP8
teaches Common Core State Standards MAFS.2.OA.2.2
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Students will fluently add within twenty by using friendly numbers, making tens, and identifying doubles. The suggested public discussion of student work shows solution paths that show a trajectory of understanding with fluency within twenty. It is important to discuss this work publicly because the work shows how students might understand and be able to solve a problem, but not be able to represent their thinking correctly. Three pieces of work are shown. The first shows an incorrect response. In this response the student can answer the question correctly but fails to add fluently to twenty. In the second example the student groups two numbers together to form a teen number and then combines to make a ten using the ones place and the other numbers. In the last response the student groups the numbers correctly to make tens and combine the two tens. This Student Work Discussion Plan was created by a member of the 2015 Delaware Dream Team. Special Materials: I would highly suggest not having any resources visible for the students so that they are doing this completely mentally. This would be a great lesson to do as a "Number Talk".
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