# 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…

# How to extend a string

We are often asked about how we can “stretch” strings beyond their place as a short mental math activity in…

# Making Thinking Visible

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

# Photo number strings for multiplication

Here are two photos I snapped as I walked by a 99 cent store in LA. Beautiful arrays, no?  I…

# Go-to questions for teaching number strings

My four-year-old son likes to walk over to the magnetic rekenrek (math rack) I keep on the fridge, move some…

# 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…

# 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…

# 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…

# Fractions as operators on money (Early fractions)

Fractions as operators, Money What is ½ of \$1.00? What is 1/4 of \$1.00? What is 2/4 of \$1.00? What…

# Doubling with early fractions

Number String: Doubling 4 x 2 1/4 x 2 1/10 x 2 1/5 x 2 2/5 x 2 4/5 x…

# 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…