Elapsed Time and Bedtime Comparisons

The video tutorial teaches how to solve elapsed time word problems using a T-chart. It begins with an introduction to Alex and Naomi's bedtimes, followed by a review of solving elapsed time problems in various intervals. Common mistakes in time counting are highlighted, such as mislabeling 1 PM as 13 PM. A word problem involving school dismissal is solved using a T-chart, demonstrating how to calculate elapsed time. Finally, the video calculates the time difference between Alex and Naomi's bedtimes, reinforcing the use of T-charts for solving elapsed time problems.

What is the main focus of the lesson involving Alex and Naomi?

• Comparing their school grades

• Finding the difference in their bedtimes

• Determining their favorite activities

• Calculating their ages

Which method is used to solve elapsed time word problems in this lesson?

• Using a calculator

• Using a T-chart

• Using a stopwatch

• Using a calendar

What is a common mistake people make when counting time after 12 PM?

• Saying 13 PM instead of 1 PM

• Skipping 12 PM

• Counting backwards

• Using a 24-hour format

What is the start time for the third graders' school day in the word problem?

• 9:15 AM

• 8:30 AM

• 9:00 AM

• 8:45 AM

How long do third graders stay at school according to the word problem?

• 6 hours

• 6 hours and 30 minutes

• 5 hours and 30 minutes

• 7 hours

What time do third graders get dismissed from school?

• 3:30 PM

• 2:45 PM

• 3:15 PM

• 3:00 PM

What is Alex's bedtime in the problem?

• 8:30 PM

• 7:14 PM

• 7:45 PM

• 8:00 PM

How much later does Naomi go to bed compared to Alex?

• 1 hour and 15 minutes

• 45 minutes

• 1 hour and 36 minutes

• 2 hours

What is the end time for Naomi's bedtime?

• 8:50 PM

• 9:15 PM

• 9:00 PM

• 8:45 PM

What did you learn in this lesson about solving elapsed time problems?

• Using a T-chart for one-minute intervals

• Using a calculator for quick results

• Using a stopwatch for precise timing

• Using a calendar for monthly calculations