Pencil

To sign pencil, hold up your non-dominant hand, with the palm facing up. Then take your dominant hand with your index finger bent and touching your thumb to your mouth. Finally, bring your hand down as if to write something in the palm of your non-dominant hand.

Imagine children who bring their pencils to their mouths as they think about something in class, shortly before writing their thoughts down in their notebooks - or on their exam sheets.