Today we set up a bacteria experiment. First, we chose two places that we thought had the most bacteria. Then we chose the two places with the least amount of bacteria. We chose these as a table. Next we went through the procedure.

PROCEDURE

1. Split the petri dish into four sections.


2. Label each section.


3. Take a sterile swab and lightly rub against one of your places.


4. Rub the swab against the agar gently. Don't jab at it.

Vocab

1. petri dish- short circular plastic container where you can grow bacteria


2. sterile swab- a germ free cotton applicator


3. agar- food for bacteria, attracts bacteria

Today we did not get to do the actual experiment, but we did label the petri dishes.

My advice is that when you go get the bacteria samples do not take out your sterile swab until you need to use it. Also, do not walk around with the petri dish open because the agar will attract the bacteria in the air.

JR PERIOD 8