T3/ A letter - Invitation to visit planet Earth

Questions
Getting to know a globe. What can you find on a globe.
Continents, oceans, cold poles, our continent, our country.
Discussing the values of our planets.
What are the advantages of visiting the Earth?
What ecological problems do we have to solve and why?

Results
The Earth – model of the Earth made using any technique.
A poster – an advertisement of the Earth for aliens made using any technique.
or/and
A letter – using words and pictures describe the Earth, ask aliens for a solution to any problems we have on our planet (ecological, social…)