Using Open Number Lines to Determine Elapsed Time

Unit 6: Time
Lesson 5 of 11

Objective: SWBAT use an open number line to manipulate time, in 30-minute intervals, and to measure elapsed time of ten-minute intervals.

Big Idea: Open number lines are a versatile and simple mental model for measuring elapsed time. This lesson develops students' analog knowledge using the skills they are close to mastering.

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Subject(s):
Math, Number Sense and Operations, telling time, elapsed time, time
  63 minutes
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