Collaborating on recycling Conservation Cooperation Responsibility

The teacher tells the children:

We obtain the wood from the trees; once we have the wood we use it to build houses and pieces of furniture or to obtain paper from it.
To have all these things the trees have to be cut down, so the forests get empty. Then, you can see the importance of planting new trees.
If we waste a lot of paper, people will cut more and more trees to give us more amounts of paper. So we have to make good use of the sheets, pieces of cardboard... if we want them to stop cutting down the trees.
A very good way of making good use of the paper is recycling it. Does any of you know what recycling is?
It's simply using again materials that have already been used.
There are some special places to do this. That's why we don't have to trash the papers into the same container other kinds of garbage are trashed. In this way the garbage men will carry them to those special places and we will be contributing in the creation of glossy forests.

The children will colour a cardboard box in blue; they will go for an inspection of the school, looking for pieces of recyclable paper to introduce them on the box. When it is full some children and the teacher will go to the closest paper container in the streets and trash the papers of the box in there.

P.S.: A small group of children will accompany the teacher each time.