You can read about how I use these cards here - http://www.peachy-teaching.com/2013/09/number-talks-and-freebie.html
These cards are a great way to guide and support students as they begin engaging in math talk activities (also called number talk). Each card has a sentence stem to get kids started talking.
Simply print and cut the cards. Punch a hole and put the sets together with a ring clip.
Students can use the sentence starters to engage in small-group or partner discussions. My students have become better able to vocalize their math thinking by using these cards.
The cards promote higher order thinking skills and challenge students to...
-look for multiple solutions
-provide support and justification for their solutions
-analyze their own thinking and the thinking of others.