This will be a big hit as a math center for your 1st-3rd graders. Knock Down addition and subtraction game is a fun review of basic addition and subtraction. Students will roll 3 dice and record the three numbers they roll. They will then use their critical thinking and math skills to come up with as many addition and subtraction sentences they can using only those three numbers. The objective is to get digits 1-10 as the answers and "knock down" or rather cross out the corresponding pins. Advanced learners can utilize multiplication facts too.