This is simply a digital illustration I made of the Montessori decanomial layout typically constructed by students with bead bars. The drawing could be used as a control card/reference or, it could be cut and made into cards as one step towards abstraction. There is a built in control, in that the size of the cards are all 1 1/2 inches from left to right, and increase in size from top to bottom. An individual piece would not fit properly if out of place. The page size is 11x17. Do what you like!