7 Signs (ASL, that is) To Streamline Classroom Managment

During Science Fair work days, we utilize a "Question Queue" where students can sign up to get questions answered and go back to work instead of waiting. Occasionally, a student will patiently wait their turn for 10 or 20 minutes only to ask, "Can I go to the bathroom?" To streamline this process - and avoid children suffering in silence - we implemented a simple ASL "toilet" sign so kids could communicate their need without disrupting the conversation.

It became a habit that stuck and now students will raise their hand like this:

I can give them a yes (or no if the situation warrants) and they are off without any interruption to the flow of the lesson.

Here is the printable packet of 7 signs that we are using:
http://goo.gl/1daR7
Images come from mykidentity.com