Unit 1, Lesson 1, Grade 2 icon
Unit 1, Lesson 1

Attribute Sort

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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). The sorting activity also requires students to look for and make use of structure. The open nature of the problem is intentionally designed to encourage students to persevere in solving the sorting activity at the center of the lesson, and the comparison and discussion section of the lesson provides students a forum for constructing viable arguments and critiquing the reasoning of others. Organize and sort polygons based on attributes.

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