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About the Collaborative
Why Early Math?
We believe every child is a capable mathematician, and every early childhood educator can be confident teaching math.
Whole Teacher Approach
Big Ideas of Early Math
Racial Justice in Early Math
Precursor Concepts
Projects and Partnerships
Our projects range from short-term to multi-year programs, from one school to networks of schools.
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Learning + Professional Development
Learning Labs
Interactive learning sessions for early childhood teachers, trainers, or administrators to better understand early math skills, math content and math teaching strategies.
Books + Resources
Explore our groundbreaking books and resources on foundational math concepts for young children.
Series
Resources aimed at teachers, educators, administrators, caregivers, and more.
Early Math Newsletter Archive
Find and read past newsletters in our archive.
Instructional Coaching
Reflective, cognitive-based teacher coaching in early math to sustain professional development insights in the classroom.
Leadership Academies
For school administrators and leaders interested in enhancing their math knowledge and understanding.
Professional Learning Modules
Online learning modules that equip you with the materials and knowledge you need to explore foundational mathematics with adult learners.
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Early Math Research
Teacher Development
Our research focuses on understanding teacher development in early mathematics.
Publications + Presentations
We publish our research in practitioner and scholarly journals and present at local and national conferences.
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About the Collaborative
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Whole Teacher Approach
Big Ideas of Early Math
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Racial Justice in Early Math
Precursor Concepts
Projects and Partnerships
Learning + Professional Development
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Leadership Academies
Instructional Coaching
Learning Labs
Books + Resources
Professional Learning Modules
Series
Early Math Newsletter Archive
Early Math Research
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Teacher Development
Publications + Presentations
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Mistakes in Early Childhood Math Learning – Obstacles or Opportunities?
Hear from the Experts
February 2026
Playing with Math to Build Autonomy, Focus on Understanding, and Increase Joy
Hear from the Experts
August 2025
The Five Principles of Anji Play
Hear from the Experts
July 2025
The Center for Family Math: Building a Movement
Ideas at Work
April 2025
Go
Photo Chat about Quantities Puts the Focus on Units
Focus on the Lesson
May 2023
What is a Number Path and How Does It Build Number Relationships?
Ideas at Work
February 2023
4 Playful Counting Books That Bring Numbers to Life
Book Ideas
September 2022
Noticing Same and Different: The Concept of Comparison with Infants and Toddlers
Focus on the Child
July 2022
How to Use Digital Photos to Build a Mathematical Language Routine for Kids
Ideas at Work
June 2022
Counting a Collection of 101 – How Did You Count Them?
Focus on the Lesson
November 2021
Quantity Cards for Subitizing
Focus on Play
November 2021
Beloved Eric Carle Books Illustrate the Math in Story Time
Book Ideas
August 2021
Why Cardinality is the Goal of Counting
Focus on the Child
May 2021
DIY Rekenrek Ideas for Home and School
Ideas at Work
April 2021
Rekenrek Chart for Voting in the Classroom
Focus on the Lesson
April 2021
Making the Number Ten on a Rekenrek
Focus on the Lesson
March 2021
3 Children’s Books Where Small Numbers Matter
Book Ideas
August 2020
Math at Your Fingertips: Songs and Fingerplays for Preschoolers
Ideas at Work
May 2020
Get on the Right Path: Make Your Own Number Sense Activities
Ideas at Work
May 2020
We’re Going on a Math Walk, Going to Find Some Math Talk
Ideas at Work
April 2020
Number as Attribute: How Many of What?
Adult Learning
April 2020
The Cover 10 Game
Focus on the Lesson
March 2020
The Match ‘Em All Activity
Focus on Play
March 2020
Why One-to-One Correspondence Matters
Focus on the Child
October 2019
Counting Collections Builds Strong Counting Knowledge
Ideas at Work
October 2019
Video Analysis of Children’s Mathematical Thinking
Adult Learning
May 2019
Video Analysis of Preschool Number Sense Activity
Adult Learning
May 2019
A New Focus for Familiar Card Games
Focus on Play
April 2019
