Logo The basic ideas of forward and back are illustrated and use of the repeat command and defining a procedure. WinLogo has been used for some displays but the principles apply to any logo program.

The forward command The right command Programming 3 dimensions Mainpage

The forward command The command fd 40 moves the turtle forward 40 steps.	The right command The command rt 90 turns the turtle 90 degrees to the right.
Programming Once the basics have been understood, then you can move on to programming, which can be viewed as "teaching the computer". In this example, the computer is taught how to "square" and then told to draw a 40 by 40 square.
3 dimension Develop more programming skills and, with the help of some 3D procedures, you can produce:

These animations were produced by GIF Construction Set, which can be downloaded from Alchemy.