Designing and doing the experiment

I have been designing the experiment and so far, i do not have any problems. This week and next week i will be conducting the experiment.

Firstly, the equipment i am going to use include:
- agar plates/ film
- cotton buds
- sterile containers
- water
- test subjects (one dog + one human)

Some things i am going to control include what the mouth has just consumed. I am going to take a sample just after they have just consumed some water. Also, i am going to try and limit the amount of air the cotton bud will touch by putting it in a sterile container.

My independent variable (what i changed) would be the type of mouth i would be taking the sample from. My dependent variable (what i am measuring) is the amount of bacteria  present on the plate after it is incubated. By observing these plates, i will be able to collect my information.

I have also written my method, but will not contain it here. I will soon conduct my experiment. Wish me luck!