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Today, I'm going to show you my project for the science fair.

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To design it, I followed the scientific method.

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First, what's the problem?

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Some people get injured while practicing sport.

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So I thought, would it be possible to make a machine to allow only by changing its size

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to be able for straining off a part of the body or the whole body?

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My hypothesis.

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I think that if the elements that compose it are degeneric enough and its behavior does

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not change substantially when changing its size scale, it would be possible.

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Results.

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Now, I have demonstrated that the machine works, and its simple elements can be built

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on a larger scale, increasing the size of all the individual components such as the

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spring, the slats, the number of LEDs and the battery power.