How do you know what time it will be in a few hours and a few minutes? For example: The clock shows 12:45. What time will it be in 2 hours and 10 minutes?

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Post on 22-Dec-2015

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  • Slide 1
  • How do you know what time it will be in a few hours and a few minutes? For example: The clock shows 12:45. What time will it be in 2 hours and 10 minutes?
  • Slide 2
  • In this lesson, you will learn how to solve elapsed time word problems in five-minute intervals by using a number line.
  • Slide 3
  • Lets Review Start time 6:30am7:30am8:30am End time
  • Slide 4
  • A Common Mistake 2:45Start time Change of time End time 1:35+ 1 08 : 3
  • Slide 5
  • Core Lesson Tanya went to daycare. The clock said 9:15am when she arrived. When her mother picked her up, the clock said 2:45pm. How long was Tanya at daycare? Start time End time Change of time
  • Slide 6
  • 5 minutes1 hour 2:45pm 9:15am2:15pm 5 hours, 30 minutes
  • Slide 7
  • Core Lesson The clock shows 12:45pm. What time will it be in 2 hours and 10 minutes? Start time End time Change of time
  • Slide 8
  • 12:45pm 2:45 pm 2:55pm 5 minutes1 hour
  • Slide 9
  • In this lesson, you have learned how to solve elapsed time word problems in five-minute intervals by using a number line.
  • Slide 10
  • Guided Practice The pool closed at 4:45 pm. It was open for 7 hours and 15 minutes before it closed. When did it open?
  • Slide 11
  • Extension Activities Write your own elapsed time word problem to the nearest five-minutes and ask a partner to solve for the unknown part.
  • Slide 12
  • Gionni can jump rope for 3 minutes and 10 seconds without stopping. If he starts jumping at 11:15 am, what time will he stop?
  • Slide 13
  • A flashlight batteries lasted for 10 hours and 19 minutes. If Lola turned the flashlight on at 3:35 am, what time did the batteries run out?
  • Slide 14
  • Quick Quiz 1) David started building a birdhouse at 6:15 pm. He finished at 7:05 pm. How long did it take him to build the birdhouse?
  • Slide 15
  • 2) The 3 rd grade went on a field trip for 3 hours and 25 minutes. If they left at 11 am, what time did they get back to school?

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