Assessing Math Concepts, Set of 9

Empower teachers to truly understand how students think about math with Didax Assessing Math Concepts, Set of 9 by Kathy Richardson.

This trusted series of teacher assessment guides provides a clear, research-based framework for identifying students’ strengths, needs, and next instructional steps in early mathematics.

Each book focuses on a key area of mathematical understanding, helping teachers assess what children know and how they reason with numbers—rather than what they can memorize. With one-on-one interview assessments, teachers gain meaningful insights into student thinking and can tailor instruction to promote deep conceptual understanding.

The Set of 9 includes all nine Assessing Math Concepts books, covering essential number concepts such as counting, comparing, addition, subtraction, place value, and number patterns. Perfect for K–2 classrooms, intervention programs, and formative assessment use.

• Comprehensive Assessment Resource – Includes all nine books in the Assessing Math Concepts series by Kathy Richardson.


• Focuses on Conceptual Understanding – Helps teachers identify how students think and reason with numbers.


• Covers Core Math Concepts – Counting, comparing, addition, subtraction, place value, and more.


• One-on-One Interview Format – Provides meaningful data to guide individualized instruction.


• Research-Based Framework – Grounded in Kathy Richardson’s extensive work in early math development.


• Ideal for K–2 Classrooms – Supports teachers in assessing student understanding and informing next steps.


• Valuable for Intervention & Progress Monitoring – Perfect for formative assessment and targeted instruction.