M2.6.8 For the adult
Perimeter and area
I made two shapes from 12 squares. Is the way round the same?
What this chapter teaches
Perimeter is the way round a shape, found by adding all its sides. Area is how many squares cover it. Two shapes can cover the same number of squares and still have different perimeters.
Three questions to ask
There is no one right wording. Listen for the idea.
- How would you find the way round a rectangle without measuring every side twice?
- Two shapes are made of 12 squares. Could they have different perimeters, and why?
- What is the difference between the perimeter and the area of a shape?
After the chapter, the learner can
- Find the perimeter of a shape by adding its sides
- Find the area of a shape by counting squares
- Draw two shapes with the same area but different perimeters
What they copy into their notebook
Perimeter is the way round. Add all the sides. Area is how many squares cover a shape. Same area can have different perimeters.