CALCULATE ELAPSED TIME Mr. Alarm Clock CALCULATE ELAPSED TIME

How is elapsed time calculated? Click on the blue arrow to go to the explanation on the next slide.

LET’S LOOK AT HOW TO SOLVE THIS… Hours Minutes + 55 105 50 -60 45 45 60 +1 From 8:10 to 9:00 is 50 minutes. Record on the chart. From 9:00 to 9:55 is 55 minutes. Record on the chart. Add the minutes together. Every time you have a group of 60 minutes, you can regroup into one hour.

Now it is YOUR turn! Remember to use your t-chart You can use the judy clock at the center You can use the clock worksheets to help you You can discuss with your partner Explain your strategy to your partner Have your partner explain it to you Both of you solve the problem… then Compare your answers Record your answers in your measurement workbook Answer the time questions when you have finished the problems in this presentation Use the blue buttons to navigate go back next slide

Click on the correct answer #1 Click on the correct answer

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CORRECT – RECORD YOU ANSWER CLICK ON THE BLUE BUTTON TO GO TO THE NEXT SLIDE

Click on the correct answer #2 Click on the correct answer

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Click on the correct answer #3 Click on the correct answer

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Click on the correct answer #4 Click on the correct answer

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Click on the correct answer #5 Click on the correct answer

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Click on the correct answer #6 Click on the correct answer

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Click on the correct answer #7 Click on the correct answer

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Click on the correct answer #8 Click on the correct answer

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CORRECT – RECORD YOU ANSWER CLICK ON THE BLUE BUTTON TO GO TO THE NEXT SLIDE

Click on the correct answer #9 Click on the correct answer

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CORRECT – RECORD YOU ANSWER CLICK ON THE BLUE BUTTON TO GO TO THE NEXT SLIDE

Click on the correct answer #10 Click on the correct answer

CLICK ON THE BLUE BUTTON TO GO TRY AGAIN SORRY… TRY AGAIN CLICK ON THE BLUE BUTTON TO GO TRY AGAIN

CORRECT – RECORD YOU ANSWER CLICK ON THE BLUE BUTTON TO GO TO THE NEXT SLIDE

Remember to record your answers in your workbook! GREAT JOB! Remember to record your answers in your workbook!

CREDITS Animations/Clip Art http://www.animationfactory.com/en/ Clocks/Elapsed Time graphics from Saxon Math http://www.haelmedia.com/html/mc_m4_002.html