# Math Manipulatives

The Number Frames App is now available for download! Here's a quick overview of how the app works.

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.

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.

**Number Pieces helps students develop a deeper understanding of place value while building their computational skills with multi-digit numbers. Young learners can represent multi-digit numbers, regroup, add, subtract, multiply, and divide. Number Pieces also gives them a drawing tool to label representations and show their understanding.**

On November 2nd combined downloads of the Geoboard and Number Rack apps from MLC exceeded 50,000, many from around the globe. In addition, thousands of users have accessed the web versions of these virtual manipulatives.

"We're gratified that these online

**The Number Rack**, or Rekenrek, was designed to support the natural mathematical development of children and specifically to help them generate a variety of addition and subtraction strategies.

Our free activity book, Using the Rekenrek as a Visual Model for Strategic Reasoning in