Dot Sampling Research Center  
4 Definition of area and the dotgrid method for an area calculation 

1 Home  2 Basic idea of the method  3 Materials issued by the Center  4 Definition of area  5 Question and Answer on the site 
4.1 Definition of area and area calculation
The area of a shape is a number that tells how many square units are needed
to cover the shape. This is the basic concept of area. The number of squares equals to the number of dots (dotgrids) approximately. 

When calculating the area complicated shapes, it is easier to count the number of dots than to count the number of squares.  

