## Reflection: Relevance Master those Area and Perimeter Word Problems with Strategies! - Section 2: A Hands on Situation: Discovering How Factor Pairs Help

I wanted students to understand that they had used area before in a different form. I wanted them to see that when we had created factor pair cards ages ago, that was their first exposure to area. I remember telling them that that lesson would help them understand area later on. With this in the forefront of my mind, I wanted the rectangle to be a solid 3 x6 or 9x2. The standard expects just a quadrilateral figure and not irregular shapes. I didn't address that the shape they created was 18 square meters too, but wanted them to create the array by making a rectangle. They didn't see that the shape they created was not a rectangle or quadrilateral. In their minds the open section in the center was part of it.  My student leader corrected the situation and explained it well as they moved the tiles to the middle of their shape, filling it in.

When the area perimeter turned out to be the same, I worried that a few students would think it would always be that way because they struggle with thinking and cling to every pattern they see. So, when my other student piped up about how it wasn't the only rectangle that could be made using 18 blocks, I was thrilled! It was the perfect lead in and was a solution to my worry.

CCSS expectations of thinking demands that we are on top of creating continual relevance and coherence to everything we do. I appreciate the continual opportunity for students to show their thinking in every lesson. The first part of my lesson was so direct and very much like pre-CCSS. But, it was necessary because my students need that structure built in. I simply overlap all the conceptual things too, creating a balance.

Connection of Factor Pairs, Arrays and Area
Relevance: Connection of Factor Pairs, Arrays and Area

# Master those Area and Perimeter Word Problems with Strategies!

Unit 2: Metric Measurement
Lesson 15 of 18

## Big Idea: Language, drawing diagrams, connections to factor pairs and arrays help students solve those confusing metric word problems!

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Standards:
45 minutes

### Mary Ellen Kanthack

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