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Number Strings

a community for number string design

  • Strings by topic
    • addition strings
    • subtraction strings
    • multiplication strings
    • division strings
    • rational number strings
    • algebra
  • What is a number string?
  • Resources
    • Books
    • The development of models
    • Two short articles on number strings
  • About

Category: subtraction strings

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

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

open number line

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

String Designers

  • 20minutejava
  • abatie
  • caldwellnicole
  • jdibrienza
  • Janice
  • jmhmath
  • Kara Imm
  • Rachel Lambert
  • raquelgoya
  • sglassco

Contact Information

Find Rachel at mathematizing4all@gmail.com Find Kara at karaimm@gmail.com

Recent Posts

  • 10 Ways to Develop a Community During Number Strings
  • Redesigning math communities for distance learning
  • Keeping our math communities humming
  • Learning to “trust the ten”—Developing a community of first grade mathematicians
  • Jenna Laib’s Blog: Daysha at the Board: Assigning Competence
  • Strings by topic
    • addition strings
    • subtraction strings
    • multiplication strings
    • division strings
    • rational number strings
    • algebra
  • What is a number string?
  • Resources
    • Books
    • The development of models
    • Two short articles on number strings
  • About

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Blogroll

  • Mathematics in the City

Top Posts & Pages

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  • What is a number string?
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  • True False and Fill in the Blank Number Strings for Second Grade
  • Differentiating Number Strings: The BandAid Problems
  • Strings
  • From additive to multiplicative thinking
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