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Time!. What are some units of time that you know?

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Presentation on theme: "Time!. What are some units of time that you know?"— Presentation transcript:

1 Time!

2 http://www.visnos.com/demos/clock

3 What are some units of time that you know?

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5 1 minute = __________ seconds 12 minutes = __________ seconds What operation would you use to change a larger unit to a smaller unit?________ What would you multiply 12 by to find the number of seconds in 12 minutes? __________ How many seconds are in 12 minutes? _________

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7 Line Plots Review from Third Grade NUMBER OF ANIMALS PER HOUSEHOLD What do you remember about line plots? A line plot displays data above a __________ ___________. Each mark above the number line represents ___________________________. Line plots make it (easy or hard?) to see if data falls into groups or clusters.

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12 Calculating Elapsed Time Record what you know: Start time: _____________ Elapsed time: _____________ End time: _______________

13 SOMETIMES you can subtract! How much time has elapsed from 1:20 to 3:45? 3:45 - 1:15

14 Sometimes you need to borrow 60 minutes, then subtract! How much time has elapsed from 2:45pm to 4:20pm? 4:20 3:80 - 2:45 - 2:45

15 SOMETIMES when the time has elapsed from AM to PM, or PM to AM, you must solve in two parts. How long are we in school from 9:00 am to 1:35pm? From 9:00 am to 12:00 pm (noon): 3 hours From 12:00 pm (noon) to 1:35 pm: + 1 hour 35 min

16 HOMEWORK: Page 117 all 118 odd

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