Cathy Humphreys, Ruth Parker

Cathy Humphreys and Ruth Parker are mathematics educators who collaborate on curriculum development and teacher training. They focus on elementary mathematics instruction and classroom discourse strategies. The duo developed the Number Talks approach, a teaching method that emphasizes mental math computation and mathematical reasoning. Their work centers on helping students articulate their thinking processes and develop number sense through structured classroom conversations. Humphreys and Parker conduct professional development workshops for teachers across the United States. They work with districts to implement Number Talks practices in K-5 classrooms and train educators in facilitating mathematical discussions. Their writing addresses practical classroom implementation of Number Talks strategies. They provide teachers with specific techniques for leading productive mathematical conversations and supporting student reasoning development.

Teachers praise "Making Number Talks Matter" for its practical approach to classroom implementation. Readers report success using the book's structured conversation formats and find the examples helpful for understanding how to facilitate mathematical discussions. Many educators note that the strategies improve student engagement during math instruction. Elementary teachers appreciate the book's focus on mental math strategies and number sense development. Readers comment that students become more confident sharing their mathematical thinking after teachers implement the Number Talks approach. Several reviews mention improved classroom discourse and increased student participation in math discussions. Some readers find the book repetitive and wish for more grade-specific examples. A few educators report difficulty adapting the strategies for students with varying ability levels. Some teachers note that implementing Number Talks requires significant practice to master the facilitation techniques effectively.