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Guidance could be offered on the sorts of changes to make, for example, keeping the helicopter in the same proportions, but gradually increasing its overall size, or keeping the width of the wings and the body constant, and gradually increasing the length of the wings and body.
A Short introduction to using Logo. This is the first in a twelve part series.
What happens when a procedure calls itself?
Mathematics has always been a powerful tool for studying, measuring and calculating the movements of the planets, and this article gives several examples.