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Have you ever
had to clean your room?
Did it seem like it took forever? |
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The actual time it
took to clean your room from the time you started to the time you
finished is elapsed time.
 In this lesson we will learn
about elapsed time.
Elapsed time
is the time that passes from the
start of an activity
to the end
of an activity. |
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Your
mom tells you to start cleaning your room at 9:00. |
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You finally finish at 5:00.
(Your room was really messy!) |
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How long did it take to
clean your room?
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One way to calculate elapsed time is to count forward on the clock. |
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If you started
at 9:00 and worked until 5:00,
it took you 8 hours to clean your room. |
Let's try another one!
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Basketball practice
will begin at 10:10. The team will practice for 2 hours and 30
minutes. |
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What time will
practice be over?
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Start by counting
forward using the hours.
Then add the minutes. Start at
12:10 and count
by 5's to 30. |
10:10 to
11:10 1 hour
11:10 to 12:10 2 hours
12:10 plus 30 minutes
12:40 |
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Practice would end at12:40. |
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Let's Practice!
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