teacher's flu is an occasion to give work to do, sorry pupils

video 3'17 : https://youtu.be/7rZfqD8exZE?si=Uii0xzkfVk436PKQ The Forces of Evolution

video 5'23 : https://youtu.be/5NdMnlt2keE?si=q1s0pF89R4RElCGj / Five fingers of evolution - Paul Andersen

video 8'48 : https://youtu.be/GhHOjC4oxh8?si=oxAdWFBUH6fid9Zh What is Evolution?