This is a digital version of the Montessori Subtraction Stripboard. This activity gives the child further practice with subtraction, it shows the child different ways of subtracting and it reinforces the concept of subtraction, the minus (-) and equal (=) signs. Once the child masters subtraction using these digital cards, he/she could write their own equation, answer it and use the self-correction chart to check the answer.Follow @speech.inc on Instagram for more videos and tutorials on speech