These are different hand signals students can hold up in the air when they need to tell the teacher something; rather than shouting across the room or waiting for the teacher to come to the student's desk.
Number talks are a great way to get your students involved in meaningful mathematical discussion! This poster shows the hand signals that are used as part of the number talks routine. It includes both an English and Spanish poster.
Use "secret" hand signals to have students SHOW you what they need. Each finger means something different, so the teacher can differentiate what kids need when there are 7 hands raised! Great classroom management technique for nonverbal communication.