Before the school time we propose interesting article about usage of nonverbalsto communicate.
The "me, too" symbol, derived from the ASL sign with the same meaning, is popular in American classrooms as an outlet for enthusiastic agreement. When a student hears a strategy or solution path that matches his thinking, he makes the "me, too" sign, acknowledging his classmate's reasoning, expressing that he had a similar idea, and communicating his understanding of what has been shared.
When students disagree with a statement that they've just heard or need to hear more so that they can follow the speaker's reasoning, they hold up a single index finger to express that they have a "point of interest."
The "build upon" signal consists of placing one fist on top of the other to represent the idea of "building." Students use this to express that they have something to say that will add to a classmate's idea.
Students make air quotes to express that they can paraphrase what they've just heard.
This signal (made by touching the fingertips of both hands together in an "A" shape) can be used by teachers or students to remind a speaker that she needs to include a unit or a label, or to use a complete sentence to express her thinking.
After being introduced to conjectures (simple unproven statements about patterns in numbers or shapes), a group of second grade students devised their own "conjecture" signal: they place a fist, which represents an imaginary light bulb, on top of their heads to indicate that they have a conjecture to share.