This book explores the foundational concept of the number line as a critical tool for early mathematical understanding in PreK-3 students. It argues that a deep engagement with the number line, beyond rote memorization, is essential for developing number sense and problem-solving skills. The work is grounded in research and practical classroom experience, offering a framework for educators to effectively integrate this mathematical model into their teaching.

This work is likely regarded as a valuable resource for elementary school educators seeking to deepen their students' understanding of fundamental mathematical concepts. The focus on the number line as a central model suggests a practical, research-informed approach to teaching early arithmetic. The book appears to offer concrete strategies for teachers to implement in their classrooms, aiming to build a strong foundation for future mathematical learning.