Warm up to the idea of subtracting integers. After watching a video where the contents of a cup instantly freeze when tossed into the air, pupils estimate the air temperature of Duluth, Minnesota (where the video was made). They then use a temperature map and the fact that Duluth's temperature is 31 degrees less than Atlanta's temperature to complete the task.

Concepts

integers, temperature, differences, weather data

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Instructional Ideas

• Using the provided weather map, have learners describe the variation in temperatures for different pairs of cities and have classmates identify the cities
• Have a science teacher explain the phenomenon
  

Classroom Considerations

• Scholars must have knowledge of the rules of operations for integers

Pros

• Video captures the interest of teenagers
• Provides an answer key
  

Cons

• None

Common Core

7.NS.A.3