Diary of the lungs project

Materials

    To make the lungs is necesary : 

 - Scissors

 - Two drinking straws 

 - Heat tape         

 - Packet of ballons                                                                                                         

 -Clear plastic soda bottle

 First Step:

We took the bottle and cut through the bottom.Then we had to clean it on the inside because it had a few of water. We put soap,  water and dry it.

 Second Step:

After washing the bottle, we ironed the cut side for didn't break the balloon, that  we use like a diaphragm.

 Third Step:

 After filing, we took the cap and got two straws glued with adhesive tape so

 that they cannot move. 

 Fourth Step:

We take two balloons ,we cut the top and we stick them to one end of the 

straw with the heat tape.

 Fifth Step:

We take another balloon and we cut it too, then we 

put it at the end of the bottle.

Finally we check if it worked...

Problem and Solution

 Problem:

  

    -The balloon that had to be put at the end of the bottle, as a diaphragm, was very difficult to put. The balloons were too small we broke four. ¬¬''

 Solution:

    -The solution found was take one of the small balloons and inflate it to make it easier to handle.