"Fist to five" check students rate their understanding by holding up the appropriate number of fingers. The goal is for everyone to be in the green. Great way for students to self-assess their understanding and help you to gauge student understanding.
I have pinned this before but it is a good reminder and she is a pretty awesome teacher! OMG THIS WOMAN IS AMAZING! What GREAT Classroom Management! Whole Brain Teaching: This is a sixth grade class, but it would work GREAT for second graders!