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Students solve divisions by "subtracting" or crossing out equal-size groups from the total in the visual model, until there is nothing left. Examples show how divisions can be solved by repeatedly subtracting the same number (the divisor). Often, it is actually easier to add intead of subtract, and figure out how many times you will add the number (divisor) until you reach the dividend.
This activity shows the children that division is really only subtraction repeating itself over and over until the final number is zero. This activity could be used by any manipulative, and verbal instruction from the teacher. There will be a whole group of manipulatives, and then the students will be asked to take away a certain number each time in groups.