Start Screen Help

Welcome to the Montessori Multiplication Checkerboard Simulation

The normal session mode is "Assistance".

Click "Start" to move to the next step.

Click the red question mark to close this window.

Use the buttons below to walk through problems. If you are new to the checkerboard, doing the problems in order, either starting with "2x3", or clicking the "Start" button above, would be best.


Multiplication checkerboards are used to multiply numbers from single digits to fairly large numbers with results that can be over 100,000,000. Simulated bead bars are used to represent numbers generated during the process of solving the problem.

This simulated activity can be useful prior to using the physical materials.