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Lesson Plan

3. Solve problems by sorting and counting shapes (A)

teaches Common Core State Standards CCSS.Math.Content.K.MD.B.3 http://corestandards.org/Math/Content/K/MD/B/3
teaches Common Core State Standards CCSS.Math.Practice.MP7 http://corestandards.org/Math/Practice/MP7
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Lesson objective: Solve problems by sorting and counting geometric shapes to figure out how many are in a category.

This lesson provides an opportunity for students to apply their knowledge and understanding of 2D shapes to a mathematical situation. Students are asked to figure out how many of each geometric shape are used to compose a castle (shapes including squares, circles, rectangles, and triangles). 

Key Concept students will use: 

  • Geometric figures can be sorted and counted to identify how many are in a category. 

Skills students will use:

  • Ability to count, sort, and categorize objects. (Grade K, Unit 3, K.MD.B.3)
  • Objects can be compared based on an attribute they share. (Grade K, Unit 8, K.MD.A.2)

Students engage in Mathematical Practice 7 (Look for and make use of structure). Mathematically proficient students are able to look closely and use structure to identify, describe and create shapes as they sort and count geometric shapes and practice sorting different 2D shapes based on multiple attributes. 

Key vocabulary: 

  • attributes
  • count
  • sort 

Special materials needed:

  • Attribute blocks 
  • Pattern blocks
Related content

Appears in

Classifying two- and three-dimensional shapes

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