Lesson plan

2. Sort shapes by attributes (FP)

teaches Common Core State Standards CCSS.Math.Content.1.G.A.1 http://corestandards.org/Math/Content/1/G/A/1
teaches Common Core State Standards CCSS.Math.Practice.MP2 http://corestandards.org/Math/Practice/MP2
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Lesson objective: Sort shapes by defining and non-defining attributes.

This lesson helps to build fluency with sorting shapes. Basic shapes are used here to highlight the similarities and differences between different shapes and their defining, and non-defining attributes. This work develops students' understanding that shapes have attributes that are both defining, like number of sides, and non-defining, like size.

Students engage in Mathematical Practice 2 (reason abstractly and quantitatively) as they make sense of the relationships between defining and non-defining attributes of shapes.

Key vocabulary:

  • defining attributes
  • non-defining attributes