You do not need to write all your courses anymore !!!
Simply listen and at the end take a picture of the black board ( everyone do that :) )
Use this application to create pdfs from your pictures

Then you can read your pdfs on you phone/tablet/computer or print them

It help you to manage your pictures and your courses will remain clean

This is a much better way to go compare to dirty piece of papers that you may loose

This is the firt version, I will improve :)

If you have any comment or suggestion please contact me

Hope it helps you to learn :)