Elapsed Time Problem Solving

The video tutorial teaches students how to calculate elapsed time using timelines. It covers three examples: a simple hour-based calculation, a mixed hours and minutes calculation, and a word problem. The tutorial emphasizes using visual aids like mountains, hills, and rocks to represent hours, five-minute intervals, and one-minute intervals, respectively. Students learn to identify changes in hours and minutes and apply the appropriate counting method to find the elapsed time.

What is the primary goal of the lesson on elapsed time?

• To determine the start time given the elapsed time

• To find the start time given the end time

• To calculate the end time given the elapsed time

• To find the elapsed time given the start and end times

When counting hours on a timeline, what symbol is used?

• Rocks

• Mountains

• Hills

• Valleys

If the start time is 5 p.m. and the end time is 8 p.m., how many hours have passed?

• 4 hours

• 5 hours

• 3 hours

• 2 hours

In the example with start time 3:15 and end time 5:33, how many hours are counted first?

• 1 hour

• 4 hours

• 3 hours

• 2 hours

What is the total elapsed time from 3:15 to 5:33?

• 2 hours and 15 minutes

• 2 hours and 18 minutes

• 2 hours and 25 minutes

• 2 hours and 20 minutes

When minutes exceed the target time using hills, what should be used next?

• Valleys

• Rocks

• Mountains

• Steps

In the word problem, what is the start time for Sam and his mother's wait?

• 2:30 p.m.

• 3:30 p.m.

• 3:00 p.m.

• 2:00 p.m.

How long did Sam and his mother wait at the doctor's office?

• 1 hour and 30 minutes

• 1 hour and 10 minutes

• 1 hour

• 1 hour and 20 minutes

What is the first step in solving an elapsed time word problem?

• Draw a timeline

• Estimate the hours

• Calculate the end time

• Count the minutes

What is the elapsed time if the start time is 2:30 p.m. and the end time is 3:40 p.m.?

• 1 hour

• 1 hour and 15 minutes

• 1 hour and 10 minutes

• 1 hour and 5 minutes