Place Value PiecesA place value demonstration tool.
The bin gutter area only removes the pieces once you've pressed on the bin button. Otherwise they are left in the gutter area to model how much you have taken away.
Select a piece then press on the split button to split that piece into smaller pieces.
Pressing the connect button will connect ones back into tens and tens back into hundreds.
This resource is especially useful for modelling the decomposition of number during vertical subtraction.