About This Lesson
This is a second grade Math Unit, Lesson 1 out of 15. Reasoning with Shapes and their Attributes - Attribute Sort. The sorting activity in this lesson allows students to justify their sorting decisions based on defining attributes (e.g., number of sides, number of angles) as opposed to non-defining attributes (e.g., color, overall size). Aligned to Common Core State Standards: 2.G.1 , MP.1 , MP.3 , MP.7
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