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8th grade science students grow bacteria


Eighth grade students participated in an inquiry based science lab to learn about bacteria, where it grows, and how they can avoid getting sick from bacteria.

The students were given specially coated petri dishes that we obtained from the University of Tennessee, Knoxville. The groups went to different parts of the building to touching things that they thought were likely to hold bacteria. They rolled their fingers on one side of the specially coated petri dishes. Next, they treated their hands by either rinsing with water, washing for 20 seconds with soap, or with a squirt of hand sanitizer and rolled their fingers on the other side of the dish.

The purpose was to see which form of treatment best prevented the growth of bacteria. Observations were recorded every other day for a week. The students were amazed at how quickly and where the bacteria grew and also how bad it smelled!
 

Written by: Michelle Carpenter, 8th grade science/math teacher
Posted: Dec 10, 2013 by Susie Jones

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