The Secret Lives of Numbers: Numerals and Their Peculiarities in Mathematics and Beyond

Math Tricks: The Surprising Wonders of Shapes and Numbers

Problem Solving in Mathematics, Grades 3-6: Powerful Strategies to Deepen Understanding

What Successful Math Teachers Do, Grades PreK-5: 47 Research-Based Strategies for the Standards-Based Classroom

Problem-Solving Strategies for Efficient and Elegant Solutions, Grades 6-12: A Resource for the Mathematics Teacher, Edition 2

Geometry, Its Elements and Structure: Second Edition, Edition 2

Challenging Problems in Geometry

Effective Techniques to Motivate Mathematics Instruction: Edition 2

What Successful Math Teachers Do, Grades 6-12: 80 Research-Based Strategies for the Common Core-Aligned Classroom, Edition 2

Effective Techniques to Motivate Mathematics Instruction: Edition 2

100 Commonly Asked Questions in Math Class: Answers That Promote Mathematical Understanding, Grades 6-12