Pencil Forehead Cancer

Angry nun/teacher stabs poor child in the head with a number two pencil. He dies shortly afterward.

Nun stabs child while he solves 71+36=? And his head is covered in blood

man has a dagger in his head. An ominous black cloud towers over him. Also there's a blackboard with a math problem on it

joints make u think about monsters and not about math roots

a screw = fangs times the square root of 42

Screw equals vampire fangs times the square root of 42