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Lesson Plan

10. Solving word problems by splitting rectilinear figures (A)

teaches Common Core State Standards 3.6C
teaches Common Core State Standards 3.6D
teaches Common Core State Standards 4.5D
teaches Common Core State Standards 4.M.4
teaches Common Core State Standards CCSS.Math.Content.3.MD.C.7d
teaches Common Core State Standards CCSS.Math.Practice.MP8
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Lesson objective: Solve area problems in which the figure is rectilinear.

This lesson provides an opportunity for students to apply their knowledge and understanding of area of a rectilinear figure to a real-life situation. Students are asked to draw a design for a rectilinear park.

Key Concept students will use: 

  • We can decompose rectilinear figures because area is additive.

Skills students will use:

  • area
  • decomposing rectangles
  • multiplication

Students engage in Mathematical Practice 8 (Look for and express regularity in repeated reasoning) as they use the area model to create a rectilinear figure.

Key vocabulary: 

  • area
  • area model
  • factors
  • multiplication
  • rectangle

Special materials needed:

  • graph paper
  • square tiles
Related content

Appears in

Developing strategies for multiplication and division

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