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LIENS Intéressants :
https://www.youtube.com/watch?v=1198jWgUpUs

https://www.youtube.com/watch?v=xHhnjLs2gDQ

https://www.youtube.com/watch?v=W1rWwNYMn-c

https://www.youtube.com/watch?v=uV7WdwYR8-c  multiplier par additions

https://www.youtube.com/watch?annotation_id=annotation_1469329381&feature=iv&src_vid=uV7WdwYR8-c&v=TyI9goQsTgI

bagues
https://www.youtube.com/embed/pZtIV7GLECU

FORCAGES
https://www.youtube.com/watch?v=CQBD-ASkQgY
https://www.youtube.com/watch?v=nGOJ6Bwgrjw
https://www.youtube.com/embed/i91qATghcZI

https://youtu.be/mUk5T9Jq5cU

https://youtu.be/rqG4ycM9Vd4     simples

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