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### Course: 3rd grade (Eureka Math/EngageNY) > Unit 4

Lesson 2: Topic B: Concepts of area measurement- Area of rectangles with partial arrays
- Counting unit squares to find area formula
- Create rectangles with a given area
- Transitioning from unit squares to area formula
- Transition from unit squares to area formula
- Area of rectangles
- Find a missing side length when given area
- Finding missing side when given area
- Area of rectangles review

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# Area of rectangles with partial arrays

## Problem

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