What this lesson teaches
Area and perimeter.
Design a garden and calculate area and perimeter!
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Area and perimeter.
The most persistent maths misconception at this level is that area and perimeter increase together. A garden design task naturally generates counterexamples — students discover rectangles with the same perimeter but different areas, and the misconception corrects itself.
1. Draw garden on grid. 2. Count squares for area. 3. Count edges for perimeter.