Everybody knows the devastating effect of carbondioxide on our climate. That's why we tried to do some research on the subject during our lessons of natural sciences. Our pupils compared the amount of carbondioxide in inhaled and exhaled air.

Using a digital device they monitored the amount of the gas during the lessons. It became clear that ventilation is an important factor in keeping the air healthy in a classroom. The result will be processed into graphs and Excel files during the science lessons.