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lesson 3
1 hour

Area And Perimeter Formulas: Real World Problems


Multiplicative comparison is foundational for understanding multiplication as scaling in Grade 5 and sets the stage for proportional reasoning in Grade 6. Students determine, using times as much as, the length of one side of a rectangle as compared to its width. Beginning this Grade 4 module with area and perimeter allows students to review their multiplication facts, apply them to new and interesting word problems, and develop a deeper understanding of the area model as a method for calculating with larger numbers.


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From of the New York State Education Department. Grade 4 Mathematics Module 3, Topic A, Lesson 3. Available from; accessed 2015-05-29.
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