Adding Integers

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Adding and Subtracting Integers You Can See: Zero Pairs and a Hot Air Balloon
arithmetic

Adding and Subtracting Integers You Can See: Zero Pairs and a Hot Air Balloon

Why is 2 − (−3) bigger than 2? Balloons are +1, weights are −1, and taking away a weight makes the balloon rise. The big idea, zero pairs, a free number talk for grades 6 and 7, and Integer Heights, a self-checking digital game.