Lesson Plan: Adding and Subtracting Units of Time Mathematics • 5th Grade

This lesson plan includes the objectives, prerequisites, and exclusions of the lesson teaching students how to measure time in hours, minutes, and seconds and solve elapsed time problems.


Students will be able to

  • add and subtract units of time to find duration, start time, and end time,
  • add and subtract mixed units of time,
  • convert units of time to add and subtract,
  • solve word problems by adding and subtracting units of time.


Students should already be familiar with

  • expressing durations of time using mixed units of time,
  • converting units of time.


Students will not cover

  • 24-hour time.

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