# How To Use Number Pieces

## Working with Number Pieces

Tap or click pieces onto the board. Then drag to move them. Tap or click a piece to select it.

Drag on the background to select multiple pieces, or hold down shift while selecting individual pieces.

Change the length of an edge piece by dragging the arrow.

Change the starting set of pieces to the basic or advanced set.

## Toolbar & Keyboard Shortcuts

Icon Tool Shortcut Description
Start Over esc Clear all pieces, drawings, and text.
Break Pieces B Break selected pieces apart into the next smallest size pieces.
Join Pieces J Join selected pieces together into the next larger piece.
Change Color C Change the color of selected pieces.
Duplicate D Duplicate selected pieces.
Rotate R Rotate selected pieces.
Zoom Z Zoom the workspace in and out.
Math Text Tool E Open a keypad for creating expressions and equations.
Tip: Double-tap text to edit it.
Writing Tool T Enter text using your keyboard.
Tip: Double-tap text to edit it.
Drawing Tools W Open drawing tool and show the drawing layer.
Trash backspace, delete Delete selected items.
Share Code K Open shared work using a code.
Share S Share your work with an image, a link, or a code.
Info I View how-to and other information about this app.

## Additional Keyboard Support

Action Shortcut Description
Move Pieces arrow keys Move selected pieces around the workspace.
Move Workspace space +
click & drag
When zoomed in, drag the work space around.
Tip: For touch pads and screens, use two fingers to drag.
Change edge piece length shift +
arrow keys
Change the length of a selected edge piece.
Add unit piece 1 Add a unit to the workspace.
Add 10 piece - vertical 2 Add a vertical 10 piece to the workspace.
Add 10 piece - horizontal 3 Add a horizontal 10 piece to the workspace.
Add 100 piece 4 Add a 100 piece to the workspace.
Add edge piece - vertical 5 Add a vertical edge piece to the workspace.
Add edge piece - horizontal 6 Add a horizontal edge piece to the workspace.

## Overview

Number Pieces helps students develop a deeper understanding of place value while building their computation skills with multi-digit numbers. Students can:

• Use number pieces to represent multi-digit numbers, regroup, add, subtract, multiply, and divide.
• Use edge pieces to display the dimensions of arrays created with number pieces.
• Use the drawing and math text tools to label representations and show their understanding.

## More Apps

For more Number Pieces resources, iPad version, and other apps, visit:
www.mathlearningcenter.org/apps

## Curriculum

To learn about Bridges in Mathematics, an elementary curriculum that employs visual models such as number pieces, please visit:
www.mathlearningcenter.org/bridges/overview