Community reviews for Number Pieces, by The Math Learning Center

Number Pieces is a great app, even if some of the moves stick a bit. Students can model composing and decomposing numbers, since it allows pieces to be grouped and ungrouped into ones, tens, hundreds, and thousands. This app has edge pieces, as well, to model arrays for teaching perimeter and area. Orientation and color of the pieces can be changed, and there are drawing tools students can use to write expressions and equations. This feature means that students can write number sentences for their representations. My take is that Number Pieces is a tool that should be on every device in classrooms using base ten blocks for supporting student understanding.