Summary
Daniel teaches perimeter as the total distance around a shape. Covers adding all side lengths and using the shortcut formulas for rectangles and squares. Quick 6-minute lesson — good as a perimeter warm-up paired with the area lesson.
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Teaching resources
Discussion questions
Discussion
Perimeter is the total length around the outside of a shape.
- How is perimeter different from area?
- A square has sides of 5 cm each. What is its perimeter?
- When would you need to know the perimeter of something in real life?
Quick work-a-long
Vocabulary: perimeter, side, polygon, distance.
Try it: Measure the perimeter of your math textbook or a sticky note. Record side lengths and add them up.