chalk drawings (on school boards)

Some drawings I've done at school during break times 🕙
I had to draw them quickly before the teacher came back and erase all the board to continue his lesson ! 😅

"J'ai cru voir une intégrale !"

Hey ! It's not a wonderful drawing, it's me 😃

That was certainly during a physic course !

Mmmmm I remember that one... a painful lesson ^^'

Ephemeral drawings, a few minutes to draw them and a few seconds to erase...

(Don't hesitate to correct my english in the comments, I try to improve my writting !)

Here is my presentation post !