Elapsed Time Using Number Lines (Under 1 Hour) | Start Time, End Time, & Elapsed Time
From Math with Mr. J
17 min3rdMath
Summary
How to find elapsed time -- the time between a start and an end -- using a number line or a clock. Mr. J counts up in easy jumps.
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All ages
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Teaching resources
Discussion questions
Elapsed time is how much time has passed; counting up on a number line makes it easy.
- What does 'elapsed time' mean?
- How can a number line help you count the time between two clocks?
- How do you handle crossing an hour?
Quick work-a-long
Words to know: elapsed time, start time, end time, number line
- Find the elapsed time from 2:15 to 3:45.
- If a movie starts at 4:30 and lasts 90 minutes, when does it end?