Learning to “trust the ten”—Developing a community of first grade mathematicians

Teacher-author Lindsay Pardeck is in her 7th year of teaching first grade at Eureka Elementary in the Rockwood School District. … More

Differentiating Number Strings: The BandAid Problems

How do you plan a number string for a group of learners who are working on very different skills in … More

Trusting the digits: Developing place value understanding

For several years, across various school communities, a teacher will tell me, “My kids don’t really have a strategy for … More

Biking on the fractional number line . . .

The following post comes from Rafael Quintanilla, a Mathematics Instructional Coach for the Los Angeles Unified School District and a … More

A count around for fractions

This February, I led a Number Strings Writers’ Retreat, as part of my role as staff developer at Math in … More

Cars, coffee, and climbing stairs: Inviting students into the story

Here’s another important contribution from our friend and colleague Marcelle Good — a 6th grade teacher at School of the … More

Video: Division on the open number line in fourth grade

Wondering what a number string looks like in a classroom? Curious about the details of the routine? The following video features … More

A “juicy” dilemma

This number string is inspired by an investigation (Comparing and Scaling, Investigation 1.2) from the Connected Math Project curriculum for … More

So, what’s the story?

This number string attempts to do something a little different — it begins with the model (instead of the problem), … More

30 ways to make number strings more inclusive

As a teacher in inclusive settings, number strings were a critical part of my daily mathematical work.  Routines are highly … More

Chocolate Arrays

Lately, I’ve been seeing arrays everywhere I go: at the grocery store, at the pharmacy, at the farmers’ market. And, … More

A Number String for Angle Measures — Before We Kick the Bucket

This post was co-created by Jesse Burkett, Ranona Bowers, and Adrian Sperduto — teachers in the Hazelwood School District and … More

(Re)Thinking Context

A recent conversation between two New York City math educators, Carol Mosesson-Teig and Kara Imm Kara, I have been thinking … More