Click image for clearer view of the code
Etoys has special container objects called Playfields which can be used for assembling parts, staging animations and also graphing.
The screenshot shows some code which graphs the motion of the ball on the y axis. The ball is in one Playfield, the graph is in another
Unfortunately, the incredibly annoying Squeakland site does not generate a direct URL for this valuable resource. To get the instructional pdf go to http://www.squeakland.org/, then click on site map, then click on Etoys Project Guides and then download Grapher.
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