Find the cards that get to zero. The activity introduces the class to the idea of adding integers. Pupils use a number line to count up and count down when adding. They play a game to collect cards that will sum to zero.

Concepts

addition integers, integers, additive inverse, negative integers, positive integers, opposite, opposite numbers, number lines

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Additional Tags

math

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Instructional Ideas

• Use two-sided counters to help visualize numbers that combine to make zero

Classroom Considerations

• Requires access to number lines
• Make the cards for the integer game before teaching the lesson
• The introductory lesson in a 25-part series

Pros

• The answer key shows the jumps on the number lines
• Contains suggestions on how to use number lines within the classroom

Cons

• None

Common Core

7.NS.A.1.a MP6 MP7