Last month, I worked in Andrew Eller’s amazing 4th grade classroom in Los Angeles that was beginning an exploration of … More

# Category: models

# 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

# Numeracy for high school: A unique challenge

Here’s a conversation between collaborators and friends Kara Imm (Co-Director, Math in the City) and Geoffrey Enriquez (Math Teacher, Vanguard … More

# What is the difference between Number Strings and Number Talks?

What’s the difference between a Number String and a Number Talk?

# 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

# 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

# What’s in a name?

This post is by reader and strings enthusiast Laura Bofferding, Assistant Professor, Purdue University I was first introduced to number … More

# Division – Whole number by fraction

During the spring of the 2012-2013 school year Kara Imm and I were working with my 5th graders to help … More

# The Power of Strings

I’m embarrassed to say this, I have a vivid memory of around my fourth year of teaching 5th grade and … More

# Closed to Open Array

After looking over beginning-of-the-year assessments, a new 4th grade teacher was concerned that half of her students were still unsure … More

# Making Thinking Visible

I recently worked with a 6th grade teacher, Miss T, as she led a string for the very first time. … More

# A Dilemma with Models

A 5th grade teaching team I work with recently raised the issue of how to model the problem 1/2 x … More