3, Lesson 3, Unit 5, Grade 7, OpenUp icon
Instructional Activity

Cliffs and Caves

Lesson 3. Unit 5. Grade 7 Open Up Resources

Open Up Resources15 min(s)

This Instructional Activity is a part of the Lesson 3, Unit 5, Grade 7. In this activity, students return to the context of height and depth to continue making sense of adding signed numbers. They use the structure of number line diagrams to examine a variety of situations, which include starting in the positives, starting in the negatives, moving away from 0, moving towards 0, crossing over 0, and ending exactly on 0. From this variety of situations, students see that the lengths of the arrows in the number line diagrams give important information about the situation.

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