We started from understanding the difference between weather and climate. Students learned the definitions from vocabularies, found commons and differences. Also each of them made a lapbook "Weather and climate" for better understanding meanings of the words. They read the texts about climate change and understanded how serious this problem is for themselves. Checked their knowledges with LEGO and made models of weather thermometers.
Now every student knows the difference between weather and climate, they understand, how serious it is.