FREE shipping on Web Order over $99 - Click for Details

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

Teacher Knowledge

Professional development is embedded throughout the system.

Targeted Assessment

Interview-based and observational assessment guides instruction.

Hands-On Practice

Differentiated station activities support practice toward mastery.

A connected system for assessment, instruction, and practice

Each resource works together to identify what students understand, determine the right instructional level, and provide targeted learning experiences.

1

Assessing Math Concepts™

Nine interview-based K-3 assessments uncover students' knowledge of key math concepts and help identify students who may need intervention.

2

AMC Anywhere

A web-based tool that captures assessment data, calculates instructional levels, and provides school, district, classroom, and student reports.

3

Developing Number Concepts

Teacher-directed instruction and independent station activities develop counting, number relationships, operations, and place-value understanding.

AMC Anywhere classroom instruction report

Data that supports action

Move from assessment results to targeted instruction.

AMC results link directly to the Developing Number Concepts curriculum, helping educators group students by instructional level and select the next appropriate teaching experiences.

  • School, district, classroom, and student reporting
  • Options with or without personally identifiable information
  • Designed to guide and adjust ongoing instruction

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.

Discover More
Developing Number Concepts Planning Guide

Developing Number Concepts Books

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

View Books
Developing Number Concepts activity cards

Activity Cards

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

Browse The Collection
Developing Number Concepts manipulatives kit

Manipulatives Kits

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

Discover More Kits
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.

View Intervention Tasks Kit
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)

Explore Professional Development

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.

Shop Kathy Richardson Resources