Logo is more then just turtle graphics. It is a lisp-based programming language, designed to teach children many things, like; spacial concepts, logic, and rudimentary programming concepts. The language is multi-facetted. It can do many things with few commands, but can also, as a child grows and understands more, can be very useful. Plus, because of the turtle graphics, it can be entertaining to a child. Children get a sense of accomplishment, because they can make the computer draw a picture, and most adults can't.