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

# Category: subtraction strings

# 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

# Number string structure and design

How are number strings designed? Typically, people tend to describe number strings as having the following structure Entry problem Helper … More

# Complications with representing constant difference on an open number line

Representing student thinking during a number string is complex. Certain strategies are particularly challenging to represent. For addition and subtraction, … More

# The “King of Strings” teaches us that strings are maatwerk

I recently reached out to Willem Uittenbogaard. Willem was one of the original collaborators between Math in the City (founded by … More

# Subtraction string – where is the answer?

My name is Jennifer DiBrienza. I taught elementary school in New York City public schools for 9 years and began … More