Dear students:

Please, please, RTDD. (read the damn directions). They are not that unclear.

If I give an instruction and the entire class cannot follow it, or more than half the class cannot, I probably donked up and didn't give good instructions.

But when 90% of the class manages without any further explanation from me, and one person can't follow the directions correctly - I probably DIDN'T donk up, it's probably you.