Unit 2, Lesson 4
Area of a Rectangle
Grade 3
Warm-up
Which 3 go together?
Activity 1
-
Can you and your partner draw the same rectangle without looking at each other's drawing?
- Partner A: Draw a rectangle on 1 of the grids provided. Describe the rectangle to your partner without telling the total number of grid squares it covers.
- Partner B: Draw the rectangle your partner describes to you.
- Place your 2 rectangles next to each other. Discuss: What is the same? What is different?
- Switch roles and repeat.
Activity 2
Find the area of each rectangle and include the units. Explain or show your reasoning.
Student Section Summary
We learned that area is the amount of space covered by a shape.
We saw that we can count tiled squares to measure area. When we tile a shape, we need to make sure that the squares are covering the whole shape without gaps or overlaps.