petri dish results

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WHERE IS THE “GERMIEST” PLACE AT MOUNTAIN PARK ES ? 5 th grade TAG students ~ September 2014 ~

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Students try to determine the place with the most germs. This PPT shows the results of two weeks growth in a petri dish. Viewer beware.

TRANSCRIPT

Page 1: Petri dish results

WHERE IS THE “GERMIEST” PLACE AT MOUNTAIN PARK ES

?

5th grade TAG students ~ September 2014 ~

Page 2: Petri dish results

Procedure:1. Each student made an hypothesis as to the place in the school with the most germs.

2. Students took a damp cotton swab to that area and gathered a sample.

3. Students swabbed a petri dish containing agar with their “contaminated” cotton

swab.

4. Students also placed a dab of hand sanitizer on the petri dish.

Page 3: Petri dish results

The petri dish was covered and observed over a period of two weeks to see if bacteria would grow.

At the end of two weeks, the following photos were taken.

WARNING: These are gross, really gross.

If you have the strength to view the bacteria that grew in the petri dishes, proceed.

As you view the photos, see if you can tell where the students put the dab of hand sanitizer to stop the growth of bacteria.

See if you can find the “germiest” place at Mountain Park ES.

Page 4: Petri dish results

W A R N I N G

Warning, Warning !!!

Gross stuff ahead.

Turn back if you must.

Page 5: Petri dish results

Between the toes of a fifth grader

Page 6: Petri dish results

Bottom stair – 5th grade hall

Page 7: Petri dish results

5th grade bathroom – 1st faucet to the right

Page 8: Petri dish results

On the wall near Ms. Searcy’s board

Page 9: Petri dish results

Girls bathroom sink

Page 10: Petri dish results

5th grade toilet - poop

Page 11: Petri dish results

Ms. Weigand’s toilet seat

Page 12: Petri dish results

Computer lab A keyboard

Page 13: Petri dish results

5th grade bathroom – 3rd stall – girls’ bathroom – poop on the wall

Page 14: Petri dish results

Tricycle in 4th grade hall

Page 15: Petri dish results

3rd grade bathroom – 2nd stall - seat

Page 16: Petri dish results

Keyboard – lab A

Page 17: Petri dish results

Around the 3rd grade bathroom drain

Page 18: Petri dish results

2nd grade girls’ bathroom – 1st stall on the right

Page 19: Petri dish results

Front door of the school

Page 20: Petri dish results

Outside of cafeteria trash can

Page 21: Petri dish results

Library return counter

Page 22: Petri dish results

1st grade girls bathroom – seat in the first stall

Page 23: Petri dish results

3rd grade boys bathroom

Page 24: Petri dish results

1st grade bathroom - seat

Page 25: Petri dish results

Conclusion:

We don’t know what kind of bacteria grew in our petri dishes, but there was some pretty gross stuff.

The germiest place at our school is:

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