PROPORTION

Hello children and thank you for beeing at art class.
Before we start today, I want you to look at your foot. Now you have to put it in your forearm. What do you percibe? Exactly! The size of your foot is the same than the distance between your elbow and your arm, I mean, the size of your foot is the same of the lenght of your forearm! This is called proportion. 
Proportion is the relative size of parts within a whole. The human body is an effective example of the design principle.
Let's see it graphically!