# The Math Learning Center Blog

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## Introducing Bridges Breakout: Number Rack

The number rack helps build the bridge from counting to computational fluency by inviting students to think about numbers in groups of 2, 5, and 10. Its 2 rows of 5 red and 5 white movable beads allow students to see and slide beads in groups rather than 1 by 1. Just as we want students to move from sounding out words letter by letter to reading morphemes and whole words, we want students to move...
Shelly Scheafer

## The Fourth R

The 3Rs—Reading, wRiting, and aRithmetic—have been foundational in education for thousands of years. My recent book, The Fourth R, adds to that list Reasoning/computational thinking. It concerns using human brains and computer brains, individually and working together, to solve problems and accomplish thoughts. Like each of the traditional 3Rs, computational thinking is both a discipline of study...
David Moursund

## The Array Model: Multiplication and Division

The array model, used throughout Bridges, is the subject of “Arrays, Multiplication and Division” by Jennie Pennant from nrich.maths.org. The piece outlines how the array model supports development of a sense of multiplicative relationships and describes how to move students from building multiplication facts and tables to exploring division as the inverse operation of multiplication. The author...
Jami Smith

## The Pattern Shapes App

The Pattern Shapes App is now available for download from The Math Learning Center. Here's a quick tutorial on how to use this new free math app. Jami is a media specialist for MLC.
Jami Smith

Jami Smith

## MLC at NCTM New Orleans

We are excited to be attending the NCTM Annual Meeting in New Orleans this year! In addition to showcasing Bridges Second Edition and our growing collection of virtual manipulatives, we will be hosting five presentations on various topics. Tiers, not Tears, for Early Numeracy Support Pia Hansen and Laurie Kilts Thursday, 12:30 pm–1:30 pm Room 214 in the Convention Center Racks, Lines, and Pieces...
Jami Smith

## The Number Line App

Watch a short video on how to download and use the Number Line App. Jami Smith is a media specialist for MLC.
Jami Smith

## The Number Pieces App

Watch a short video on how to download and use the Number Pieces App. For examples of the Number Pieces App in the classroom, check out our pinterest board. Jami Smith is a graphic designer and social media manager for MLC.
Jami Smith

## The Number Rack

The Number Rack facilitates the natural development of children’s number sense. Rows of moveable, colored beads encourage learners to think in groups of fives and tens, helping them to explore and discover a variety of addition and subtraction strategies. The Number Rack is featured extensively throughout Bridges in Mathematics in grades K–3. We’ve compiled a collection of resources to support the...
Jami Smith