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Lesson Plan

10. Tents: Apply knowledge to find missing lengths (A)

teaches Common Core State Standards CCSS.Math.Content.6.EE.A.2c http://corestandards.org/Math/Content/6/EE/A/2/c
teaches Common Core State Standards CCSS.Math.Content.6.G.A.1 http://corestandards.org/Math/Content/6/G/A/1
teaches Common Core State Standards CCSS.Math.Practice.MP2 http://corestandards.org/Math/Practice/MP2
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Lesson objective: Apply area formulas to determine areas and to find unknown measurements.

This lesson provides an opportunity for students to apply their knowledge and understanding of area formulas to a real-life situation. Students are asked to determine if Omar has a long enough string of lights to go around the edge of a tent. This will involve finding missing measurements of trapezoids and triangles.

Key Concept students will use:

  • We can find the area of figures if we have sufficient information about the figure.  We can also find unknown measurements if we know the area and sufficient information about the figure.

Skills students will use:

  • finding the area of rectangles (Grade 4, Unit 2)
  • decomposing figures
  • finding the area of triangles, trapezoids, and parallelograms
  • finding missing lengths when the area is known

Students engage in Mathematical Practice 2 (Reason abstractly and quantitatively) as they determine the relationship between given information and what they are asked to find, solve for missing variables, and determine the answer to the task.

Key vocabulary:

  • area
  • base
  • height
  • parallelogram
  • trapezoid
  • triangle
Related content

Appears in

Problem solving with area in 2-D shapes

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