Unit 2, Lesson 4
Area of a Rectangle
Grade 3
Warm-up
Which Three Go Together: Area and Arrays
Which 3 go together?
Activity 1
What Did I Create?
-
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
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.
Have feedback on the curriculum?
Help us improve by sharing suggestions or reporting issues.