Finding the Area of Polygons

This Finding the Area of Polygons activity & project also includes:

Third graders are exposed to finding the area of polygons by decomposing figures and recomposing them into rectangles. This strategy allows children to expand on their prior knowledge of constructing shapes by rearranging parts into squares. 

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CCSS: Designed
Instructional Ideas

  • Ideal for using as a guided practice in order to establish connections between composing shapes and finding their areas
Pros

  • Incorporates simple and challenging figures
  • Includes solution page
Cons

  • None