During this week the students learned what global warming means and what are its causes.

We used an easy example with the little ones so they could understand it better. We used the closed car on a sunny day to explain. Without the use of air conditioning and leaving the windows closed all the time, the temperature in the car was getting high and we couldn't stay inside it for a long time. 

Students were very curious about the subject and gave several ideas such as: Why don't we create a giant refrigerator to make everything fresher? (4-year student).