Making Number Talks Matter is about the myriad decisions facing teachers as they make this fifteen-minute daily routine a vibrant and vital part of their mathematics instruction. Cathy Humphreys and Ruth Parker offer practical ideas for using Number Talks to help students learn to reason numerically and build a solid foundation for the study of mathematics. Using insight gained from many years of doing Number Talks with students of all ages, Ruth and Cathy provide questions to pose during Number Talks, teacher moves that turn thinking over to students, the mathematics behind the strategies, and ways to overcome bumps in the road.