Plus (+) and Minus (-)

Here’s a trick I’ve been using to help my students remember the difference between addition and subtraction. For addition: I make a plus symbol with my index fingers, hitting them together repeatedly and rapidly as I say, “Plus, plus, plus, plus, plus, more, more, more, more, more.” For subtraction: I sweep my index finger dramatically and firmly to the side as if I’m motioning for a dog to go away (and writing a minus sign in the air), and say, “Minus!” in a commanding voice (because minus is making something go away). And guess what… it’s working!

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