I just finished sprucing up my accountable math talk stems. I print these on cardstock, cut along the border, laminate them, punch holes in the corner and put silver rings through.
These stems are used in the math block when students are explaining, justifying, and critiquing other students’ work. Students use them to help formulate conversation about math concepts. The first few weeks of school maybe only giving students five to choose from would be appropriate, but as the year progresses attached new stems to the rings. In my class they are in the manipulative bins for each group so students can always access them. They go along with the Standards of Mathematical Standards.
Another place to visit for math talk ideas/stems, visit: GPS Math Coach