1. Time!

3. What are some units of time that you know?

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? _________

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.

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