In previous lessons, students learned to find the area and perimeter of rectangles. In this lesson, students draw rectangles with a specified perimeter, find their areas, and notice that rectangles with the same perimeter do not always have the same area. Students then draw rectangles with specific perimeter that have different areas.
Activity 2: Same Perimeter, Different Area
- Draw rectangles with the same perimeter and different areas.
- Let’s explore rectangles with the same perimeter.
- Create 4 visual displays. Each visual display should be labeled with a different perimeter. Use the following perimeters: 12 units, 20 units, 26 units, 34 units).
- Students cut out and tape their rectangles on one of the visual displays during this activity.
|Activity 1||15 min|
|Activity 2||20 min|
|Lesson Synthesis||10 min|
Teacher Reflection Questions
Who has been sharing their ideas in class lately? Make a note of students whose ideas have not been featured in class and look for an opportunity for them to share their thinking in tomorrow’s lesson.
- Can You Draw It? (1–5), Stage 4: Area and Perimeter (Addressing)
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