Tractor Coloring Pages: Tractors are amazing vehicles that help farmers do their important work of growing food for us all. For preschoolers who are just beginning to learn about the world around them, a simple outline of a tractor can be a really fun and exciting thing to see. Tractors have big, round wheels that help them move through fields, and a tall chimney that lets out smoke. The simple outline of a tractor can show these features in a way that is easy for little ones to understand and appreciate. Have fun learning about tractors, preschoolers!