EZ Programing Demos

Slow motion, step by step, animated demonstrations of basic computer programing techniques

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List of articles for turtle graphics....

When you use turtle graphics, you are pretending that you are directing a little drawing robot. This type of graphics was made popular with the computer language called LOGO. The drawing robot is called a turtle because the original drawing robot looked a bit like one.

Here's some links to the basics and some designs that will get you started with turtle graphics. More information is below the links.

Imagine a small, invisible turtle at the origin facing directly right. Imagine that the turtle has a pen with which it draws. The turtle draws on the graph with this pen as it moves along. So, by commanding the turtle to move so far in a certain direction you can draw a line of a certain length and slant.


The computer language LOGO has a drawing method called turtle graphics.

Originally developed at MIT, the first drawing turtle was an actual mechanical robot that moved about the floor under the direction of a computer program. The robot would drag a pen and draw a line as it moved along.

The robot looked like a turtle. So that is why it is called turtle graphics.

Computer languages other than LOGO can implement a set of turtle graphics drawing commands. Here at EZ Programing Demos we imagine an invisible drawing robot with a pen. It moves about our (x, y) plane and leaves a trailing line as it travels.

We will demonstrate a basic set of turtle graphics commands.


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At EZ Math Movie

EZ Math Movie is a site that can help you experiment with and understand many topics in mathematics. Its main feature is an interactive animated (x, y) graph that you control with an actual programing language. There are many examples and tutorials, and EZ Math Movie is crossed referenced with both EZ Programing Demos and Zona Land Education.


Zona Land Education is a site with explanations and interactive diagrams covering many topics in physics and mathematics. Zona Land Education is cross referenced with EZ Math Movie, and it contains several animations that use EZ Math Movie's programing language.