We are still taking on-line classes. Therefore, I gave them a very easy task: to collect materials from nature, which they could find around their house. Before that, we had a discussion about what we could do to stop the waste of natural resources. One of the sollutions was to use natural materials in order to made small objects or small school projects. With all the materials they had got around the house, they did very interesting projects which they had to present to their classmates. The students were very happy to share their work with their collegues. They also gave feedback to their friends.