Integer Subtraction

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Objective

Students will model subtraction of integers using a number line.

Big Idea

Is subtraction the complete opposite of addition?

Launch

5 minutes
  • POD

As student enter the room, they will have a seat, take out their Problem of the Day (POD) sheet and begin to work on the question on the SMARTboard.  The POD also allows students to use MP 3 continually based on the discussions we have about the problem each day.

 

Use the number line to model how to perform the following subtraction:

-5 – (-7)

  • Learning Target

The target for the day is also on the SMARTboard each day when students enter the room.  The target for today’s lesson is for students to model subtraction using a number line.

Explore

25 minutes

Summary

5 minutes

Exit Ticket

How do you know the sign of an answer when you subtract integers?