Åk 6–9
2.2 Using Area Measurements and Area Figures
It is only sometimes that you are able to compare two area’s size by putting them over each other. When you can’t do this, you can use a grid.

Which do you think is bigger? Figure A or B?

With a grid, you can more easily compare, right?

Then we can calculate the number of squares inside the figure.  A square is an area unit.

An area unit:

Which figure has the largest area?

It is a little impractical to always have a gird when we are calculating areas.  There are other simpler ways to calculate areas.  You will learn these in the next chapter.