Understand the Opposite of a Number by Looking at a Number Line

This Understand the Opposite of a Number by Looking at a Number Line video also includes:

This first video in a seven-part series introduces opposites with a number line and shows the relationship to zero. It uses vertical and horizontal number line to show opposites. It quickly references that -(-24) means the "opposite of negative 24" and how it becomes positive. 

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CCSS: Designed
Classroom Considerations

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Pros

  • Extra activities and guided practices listed in slides under resources
  • Uses horizontal and vertical number lines
  • Use as quick warm-up
Cons

  • Not enough material for full lesson
  • Last section on -(-24) can be confusing as new material
Common Core