Reflection: Diverse Entry Points Area in Real Life With Irregular Polygons - Section 2: Mini Lesson

 

Students may need to have an explicit, separate lesson to see how to determine the lengths of sides they draw in to create separate rectangles.  Some of my students needed to see the rectangles drawn separately from the others to determine the lengths of the sides and the areas.

Other students needed to have a reminder to add in the length above the line they drew.  It was challenging to move between adding and subtracting especially for ELL students.  This is what prompted the use of the grid paper that benefitted all students. 

  Connecting To Prior Knowledge
  Diverse Entry Points: Connecting To Prior Knowledge
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Area in Real Life With Irregular Polygons

Unit 3: Measurement
Lesson 7 of 13

Objective: SWBAT calculate the area of an irregular polygon using multiplication strategies with arrays.

Big Idea: Dividing an irregular shape into rectangles helps students find the area of an irregular shape.

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briefmarke frank stella d4 1997
 
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