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Kathy Richardson Math Resources | Didax
Comprehensive assessment & instruction resources

Build true mathematical understanding.

A research-based, classroom-tested approach that brings together groundbreaking assessments, trusted books, hands-on student activities, and aligned manipulatives for K-3 instruction, intervention, and core curriculum support.

Systematic solution to mastering number concepts: professional development, assessment, teach and learn, and practice and apply

A systematic solution to mastering number concepts

Four connected components work together to strengthen teacher knowledge, diagnose student understanding, guide instruction, and provide meaningful practice.

1

Professional Development

Professional development is embedded in every assessment and instructional resource, developing teacher content knowledge to ensure student success. Math Perspectives also provides professional development for educators.

2

Assessment

Interview-based and observational assessments are used first to diagnose each child’s understanding and then formatively to guide and adjust ongoing instruction across the system.

3

Teach & Learn

Dynamic whole-group and small-group instructional materials progress students through the critical phases of mathematics.

4

Practice & Apply

Hands-on differentiated station activities give students opportunities for practice and application as they work toward mastery.

Resources for every phase of learning

From professional learning to small-group intervention and hands-on stations, the program gives educators practical tools for building lasting number sense.

ASSESSING MATH CONCEPTS™ (AMC)

ASSESSING MATH CONCEPTS™ (AMC)Assessment Books

helping teachers uncover students’ knowledge of essential number concepts, the building blocks of numeracy for young learners.

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Developing Number Concepts Planning Guide

Developing Number Concepts Books

Counting, comparing, patterns, addition, subtraction, place value, multiplication, division, and planning support.

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Developing Number Concepts activity cards

Activity Cards

Ready-to-assemble, color-coded learning stations that save teacher prep time and make differentiation easier.

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Developing Number Concepts manipulatives kit

Manipulatives Kits

Comprehensive classroom kits with activity cards, manipulatives, and DNC dice for concrete, engaging learning.

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Small Group Intervention Tasks kit

Small Group Intervention Tasks Kit

64 interactive tasks across eight foundational math concepts, aligned to DNC books and designed for focused small-group work.

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Professional Development

Professional Development

offering a variety of courses to provide educators with the tools, strategies and assessments they need to ensure that all students are successful in the study of mathematics.grade Pre-K-5)

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Blueprint for Developing Mathematical Minds

Professional Development
  • How Children Learn Number Concepts
  • Planning Guide
Assessment
  • AMC
  • AMC Anywhere
Teach & Learn
  • DNC Books
  • Small Group Tasks for Intervention
Practice & Apply
  • Activity Cards & Manipulatives
  • Number Talks

Give every student a clear path to number understanding.

Explore the Kathy Richardson assessment and instruction system for core curriculum, supplemental use, or targeted intervention.

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