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Louis Pasteur
By Sharon Fabian |
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1 Everyone learns about the scientific method. In science class, you learn all of the steps. You learn what a variable is, and you learn that it is a good idea to experiment on just one variable at a time. You learn to have a control to compare your results to. It's just an ordinary thing that everyone learns in school now, but it wasn't always that way. Back in the early 1800's, the scientific method was something new. Many people who did experiments had never heard of variables or controls.