In this post, Kara Imm shares a May 2020 interview with Kate Smallberg about how to transition our number strings … More
Category: rational number strings
The Mathematics of Core Sampling: Division of Fractions
About the Co-Authors Keely Zaientz and Corey Levin teach 6th and 8th grade math in an integrated co-teaching classroom at … More
Life beyond the algorithm: Division of decimals
About the author: Kit Golan Kit is an MfA Master Teacher teaching 6th and 7th grade math in a NYC … 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 “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
New percentage number strings
We recently saw the problem above on a New York CCSS-M 6th grade benchmark test. A few teachers I was … More
Fractions as Operators (Dot Arrays)
Here’s a collection of strings written by teacher participants at the Summer Institute at Math in the City (City College, … 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
Multiplying fractions: Why context matters
Our fifth grade team was trying to encourage students to use a visual model to represent their thinking when they … More
New strings for Measurement + Unit Conversion
Our 5th grade team was trying to address several challenges with implementing Common Core 5th grade standards of multiplying and … 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
a series of sorting fractions number strings
Sorting Fractions, money, percentages or decimals Which would you rather have? 45/100 or ½ ¾ or 8/10 8/20 or 2/5 … More
Halving with early fractions
Minilesson: Halving (Rachel Lambert) What is ½ of 1? What is ½ of ½? What is ½ of 1/4? What … More