Materials 1-4 are the materials needed to make a homemade lung capacity machine.  I used a 500 ML measuring cup to calibrate the jug.  The alcohol swabs and the Listerine were used to disinfect the hose.

1.           One three gallon water jug

2.           One rubber made tub

3.           One hose

4.           One piece of wood with a circular cut to hold the jug.

5.           One 500 Ml measuring cup for calibrating the jug

6.           Alcohol swabs

7.           Listerine

8.           Four people from each grade six through to twelve; two people that have been exposed to second hand smoke  regularly in their homes, and two that haven’t been