Base Block Subtraction

Base Block Subtraction is an activity that can be used with students on their own computer as individuals or as a group working together to solve the problems on a smartboard. This activity can be used with the grade 3 math curriculum to emphasize addition and subtracting that requires carrying and borrowing. The neat thing about this activity is that students can explore addition and subtraction using manuiplatives without the temptation of playing with them in a use other than that of mathmatics. Also unlike base 10 blocks students can trade in the virtual blocks and they automatically split apart into ones. The separation of larger blocks into ones or tens will help students to visualize the steps that need to be taken in order to solve the problem.

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