Summary
An animated Mage Math lesson on perimeter — the distance all the way around the outside of a shape, made for grade 3. Bright 3-D animation walks kids through it with clear, worked examples they can pause and try.
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All ages
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Teaching resources
Discussion questions
Talk about it
Perimeter - Finding Perimeter of Polygons clicks once you see it worked out. Watch an example, then use these questions to make sure it stuck.
- How do you find the distance around a shape?
- How is perimeter different from area?
- If you know some sides, how can you find a missing one?
Quick work-a-long
Vocabulary: perimeter, side, polygon, distance around.
Try it: Draw a rectangle and label its sides. Add all the sides to find the perimeter, then check your total.