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Lesson Plan

5. Organize categories and subcategories of objects (FP)

teaches Common Core State Standards CCSS.Math.Content.5.G.B.3 http://corestandards.org/Math/Content/5/G/B/3
teaches Common Core State Standards CCSS.Math.Content.5.G.B.4 http://corestandards.org/Math/Content/5/G/B/4
teaches Common Core State Standards CCSS.Math.Practice.MP7 http://corestandards.org/Math/Practice/MP7
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Lesson objective: Create and organize categories and subcategories of two-dimensional figures.

This lesson helps to build fluency with classifying two-dimensional figures using a variety of attributes. Flowcharts and Venn diagrams used here because they highlight relationships between figures. This work develops students' understanding that attributes belonging to a category of two-dimensional shapes also belong to all subcategories of that category.

Students engage in Mathematical Practice 7 (look for and make use of structure) as they use and create organized structures for categories of shapes, to visualize the relationships between different plane figures.

Key vocabulary:

  • attribute
  • equilateral
  • flowchart
  • isosceles
  • kite
  • parallelogram
  • rectangle
  • rhombus
  • scalene
  • square
  • subcategory
  • trapezoid
  • Venn diagram

 

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Appears in

Classifying two‐dimensional geometric figures

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