These posters display math talk questions for students to ask each other during math discussions. Here is a list of the questions:
Why did you think that?
How did you know?
How is your work different than mine?
How did you know what operation to use?
Can you prove that your answer is correct?
I agree/disagree because...
How is your work the same as mine?
Why is that the answer?
Why did you choose this method?
What's your reasoning?
Can you show me what you did?
How did you get your answer?
I hope this sparks some great "math talk" in your classrooms!