This year, as part of the Science festival, many students of different ages were thinking and exchanging ideas regarding wind. The end result of this project is an individual creation anemometers that everyone took home at the end of the day. First the students of 1e physics-chemistry major and their teacher made a video tutorial and wrote 9 questions to guide 5e students in solving assigned problems. The 5e students then spent the morning in primary school where they repeated this process with pupils in CE2, CM1 and CM2. Watch the video.