3ème période
https://docs.google.com/presentation/d/1oFhPw1swwBRxw9lvy72msKa1s1mMCg0VTWBRomHTKlY/edit#slide=id.g5bd9d66d92_0_1
5ème période:
https://docs.google.com/presentation/d/1K_AVBNCL1aZVlb9FLNPkQS-qkwPMRd9Wo8Pa6gSZd3Q/edit#slide=id.p
6ème période
https://docs.google.com/presentation/d/10K6jj9WRWb8ItqE4EeBXN3PP0IuYzZ2BxqjlOSUs2hU/edit#slide=id.p
