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Elapsed Time. Mathematics Common Core 3.MD.1 Grade 3 Mindy Godwin July 15, 2013. Objective Using a number line, learners will be able to determine elapsed time by identifying starting, ending, and in-between times of activities. Common Core Mathematics Standard

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Elapsed time

Elapsed Time

Mathematics

Common Core 3.MD.1

Grade 3

Mindy Godwin

July 15, 2013


  • Objective

    • Using a number line, learners will be able to determine elapsed time by identifying starting, ending, and in-between times of activities.

  • Common Core Mathematics Standard

    • 3.MD.1 Tell and write time to the nearest minute and measure time intervals in minutes. Solve word problems involving addition and subtraction of time intervals in minutes, e.g., by representing the problem on a number line diagram.


Main menu
Main Menu

Standard & Objective

Content

Posttest

Credits

Exit Show


Content 1 1 definition
Content 1.1: Definition

  • What is elapsed time? Let’s define it!

    • The time that has passed between two events

      OR…

    • The difference between two times

      ALSO…

    • The time that can be measured between the beginning and the end of an activity


Content 1 2 base 60
Content 1.2: Base-60

  • Reminder: Time is counted in base-60. There are sixty minutes in every hour!

  • We cannot do vertical subtraction using base-10 to find elapsed time. Can we find another way?


Content 1 3 the number line
Content 1.3: The Number Line

Elapsed Time: 75 mins. OR 1 hour, 15 mins.

+15 minutes

  • 10:00 am

  • Start

  • Begin

  • Base-60

  • Hour

  • Finish

  • End

  • 9:00 am

  • 10:15 am

+60 minutes


Content 1 4 real world situations
Content 1.4: Real-World Situations

Can you think of any real-world situations where elapsed time is important?

  • What about baking a cake?

  • What about getting ready before school?

    Elapsed Time Video


Jack ate his lunch in 12 minutes he finished at 12 26 pm what time did he begin eating
Jack ate his lunch in 12 minutes. He finished at 12:26 pm. What time did he begin eating?

  • 12:15 pm

  • 12:21 pm

  • 12:14 pm

  • 12:07 pm


Melanie s volleyball game started at 1 00 pm and ended at 2 45 pm how long did the game last
Melanie’s volleyball game started at 1:00 pm and ended at 2:45 pm. How long did the game last?

  • 1 hour, 15 minutes

  • 1 hour, 45 minutes

  • 2 hours

  • 2 hours, 45 minutes


Mrs. Taylor’s science class lasts for 50 minutes. If it starts at 10:10 am, what time will class be over?

  • 11:00 am

  • 12:00 pm

  • 10:40 am

  • 11:10 am


A frozen pizza takes 14 minutes to cook. Adam placed a pizza in the oven at 1:27 pm. What time should he take the pizza out of the oven?

  • 1:41 pm

  • 1:53 pm

  • 1:38 pm

  • 2:01 pm


Julia needs to read a book for 20 minutes. What time should she begin reading if she wants to finish at 4:15 pm?

  • 4:00 pm

  • 3:45 pm

  • 3:55 pm

  • 3:50 pm


Correct good job
Correct! Good Job! she begin reading if she wants to finish at 4:15 pm?


Incorrect try again
Incorrect! Try Again she begin reading if she wants to finish at 4:15 pm?


References
References she begin reading if she wants to finish at 4:15 pm?

donaldsonm. (2010, June 1). Elapsed Time. Retrieved from SMARTExchange: http://exchange.smarttech

.com/details.html?id=d657b291-ac40-4a5b-a4d9- 9bf574e680fc

Everette, M. (2013, January 11). Teaching Elapsed Time: Strategies That Work. Retrieved from Scholastic: http://www.scholastic.com/teachers/top- teaching/2013/01/teaching-elapsed-time- strategies- work

Scholastic. (2013). Measurement: Elapsed Time. Retrieved from StudyJamz: http://studyjams.scho

lastic.com/studyjams/jams/math/measurement/el apsed-time.htm


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