How Do We Measure Area?
The purpose of this lesson is for students to use square tiles to build shapes and measure area.
Previously, students compared the area of shapes informally—by cutting out and overlaying the shapes, by observing whether one shape would fit into another, and by covering the shapes with pattern blocks and comparing the number of blocks used.
In this lesson, students learn that squares can be used to measure area: by tiling all of the shape. Each square represents one unit of area, or one square unit. Inch tiles are used, but are referred to as “square tiles” with students to emphasize how the tiles are used to measure square units. Students learn that shapes that don’t have specific names can be referred to as “figures.”
In the next lesson, students will take a closer look at square tiles that overlap.
Provide inch tiles for students to use during the cool-down.
- Explore area by building shapes with unit squares.
- Use unit squares to measure area.
- Let’s use square tiles to measure area.
Materials to Gather
Materials to Copy
- Use Square Tiles to Measure Area
- Each group of 4 needs 80 square tiles.
- Each group of 2 needs 80 square tiles.
|Activity 1||20 min|
|Activity 2||15 min|
|Lesson Synthesis||10 min|
Teacher Reflection Questions
What ideas and experiences do students have about area? How did they influence students' work?
- Can You Build It? (3–5), Stage 1: Rectangles (Addressing)
- Five in a Row: Multiplication (3–5), Stage 1: Factors 1–5 and 10 (Supporting)
Print Formatted Materials
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|Student Task Statements||docx|
|Lesson Cover Page||docx|
|Cool Down||Log In|
|Teacher Guide||Log In|
|Teacher Presentation Materials||docx|