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Louis Pasteur (1822-1895) was one of the greatest biologists of the nineteenth century.
Part of the Resource Center from the National Health Museum, this one-page Louis Pasteur biography includes a link to a page describing how Pasteur debunked spontaneous generation.
This one-page illustrated Louis Pasteur biography for elementary and middle-school students includes a huge collection of printable and interactive games and worksheets.
In their article on the scientific method, How Stuff Works uses one of Pasteur's famous spontaneous generation experiment as an example.
Although Louis Pasteur is not referenced by name, this one-page article from The Kitchn does a nice job of explaining how milk is pasteurized and why.
"Pasteur founded the science of microbiology and proved that most infectious diseases are caused by micro-organisms..."
Practice makes perfect, and IXL makes math practice fun.