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Bacteriology Science Fair Project

Bacteria Growth Race

Bacteria Growth Race | Science Fair Projects | STEM Projects
Let's find out which bacteria grows the fastest! We'll take samples from the feet of a chicken, a human, and a rabbit, and see which one grows the most in three days.


The hypothesis is that if the size of the animal that the sample was taken from is increased, then the speed of the growth of the bacteria will increase.

Method & Materials

You will take samples from the feet of a chicken, a human, and a rabbit, place them on agar petri dishes, and record the growth of bacteria over three days.
You will need a culture mix, water, a stove, a pot, nine petri dishes, graph paper, and samples of bacteria.


The results showed that the bacteria from the feet of the human grew the fastest. The average growth for the human cultures was 1/30 cm the first day, 3 1/6 cm the second day, and 31 2/3 cm the third day. This stands out because it was the fastest growing bacteria.

Why do this project?

This science project is interesting because it shows how different bacteria can grow at different speeds, depending on the source.

Also Consider

Variations to consider include testing different types of animals, or testing the bacteria in different environments.

Full project details

You can find additional information and details for this science fair project here. Have fun exploring!
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