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# Stick Addition/Subtraction or Counting Up and Down

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This is a set of instructions that I created to assist students with addition and subtraction.

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### Stick Addition/Subtraction or Counting Up and Down

1. 1. Stick Addition/Subtraction A very simple counting strategy that students quickly grasp is that of stick addition and subtraction. For example, 12 + 2 = 14, utilizing stick addition, would be I I I I I I I I I I I I + I I = 14 Or 16 – 9 = 7 I I I I I I I I I I I I I I I I A student would simply pull out a sheet of scratch paper and draw twelve lines + two additional lines and count them all together for the first example. In the next example, the student would draw sixteen lines and subtract nine. Counting Up & Down Counting up is an alternative addition strategy in which a student counts up on their fingers from a number being subtracted to the number it is being subtracted from. For example, in the problem 16 – 9 the student would start counting at 10 on their fingers, since 9 is the number being subtracted, and count up to 16. The number of fingers that the student is holding up after counting up to 16 is the answer. (This is the easiest method of counting numbers that exceed the 10 fingers). Counting down is an alternative subtraction strategy in which a student holds up the number of fingers to be subtracted from and puts down the number of fingers to be subtracted. The number of fingers that the student is holding up afterwards is the answer.