Calculating Elapsed Time Backwards

What is the first step in solving the problem according to Mrs. Gish?

• Underline important information

• Create a timeline

• Count back the time

• Read the problem

Tags

CCSS.3.MD.A.1

What does Mrs. Gish underline in the problem?

• The times mentioned

• Locations

• Irrelevant information

• The names of people

Tags

CCSS.RI.4.2

CCSS.RI.5.2

CCSS.RL.1.2

CCSS.RL.2.2

CCSS.RL.5.2

What is the final activity Sam needs to do before he starts his homework?

• Dinner

• Playing outside

• Baseball practice

• Riding his bike

Tags

CCSS.RI.1.5

CCSS.RI.2.5

CCSS.RI.3.5

CCSS.RI.4.3

CCSS.RI.5.5

How much time does Sam allocate for dinner?

• 45 minutes

• 55 minutes

• 1 hour

• 10 minutes

What method does Mrs. Gish use to solve the time calculation?

• Estimation

• Forward calculation

• Using a digital clock

• Counting back method

Tags

CCSS.3.MD.A.1

What is the purpose of creating a timeline in solving the problem?

• To organize events chronologically

• To confuse the reader

• To skip unnecessary details

• To make the problem longer

How many minutes before 7:00 PM must Sam leave to ride his bike to practice?

• 55 minutes

• 10 minutes

• 1 hour

• 30 minutes

Tags

CCSS.3.MD.A.1

What time does Sam need to start his homework?

• 5:50 PM

• 4:55 PM

• 7:00 PM

• 6:50 PM

Tags

CCSS.3.MD.A.1

What is the total time Sam needs from finishing play to starting baseball practice?

• 1 hour and 55 minutes

• 2 hours and 5 minutes

• 2 hours and 15 minutes

• 1 hour and 45 minutes

Tags

CCSS.3.MD.A.1

What does Mrs. Gish encourage students to do at the end of the video?

• Keep calculating using the method

• Start with the most recent event

• Forget the method

• Ignore the timeline

Tags

CCSS.5.G.A.2