Understanding Time Conversions and Measurements

Miss Nelson teaches lesson 12.8 on units of time, covering seconds, minutes, hours, days, weeks, months, and years. The lesson explains how to read an analog clock and compares the duration of hours and seconds. An example is provided to compare time spent on projects in hours and minutes. The lesson concludes with a recap of key time conversions.

What is the main focus of lesson 12.8?

• Addition and subtraction

• Units of time

• Geometry

• Fractions

Which of the following is NOT a component of an analog clock?

• Minute hand

• Digital display

• Hour hand

• Second hand

How many seconds are there in a minute?

• 30

• 90

• 45

• 60

If the second hand makes a full turn, how many seconds have passed?

• 90 seconds

• 120 seconds

• 60 seconds

• 30 seconds

How many seconds are there in an hour?

• 1,800

• 2,400

• 4,200

• 3,600

Which is greater: the number of minutes or seconds in an hour?

• Depends on the clock

• They are equal

• Seconds

• Minutes

Lissa spent 2 hours on her project. How many minutes is that?

• 120 minutes

• 180 minutes

• 60 minutes

• 240 minutes

Who spent more time on their project: Lissa with 2 hours or Cliff with 200 minutes?

• Lissa

• They spent the same amount of time

• Not enough information

• Cliff

What is the conversion factor from hours to minutes?

• Multiply by 90

• Multiply by 60

• Multiply by 45

• Multiply by 30

If you have 3 hours, how many minutes do you have?

• 120 minutes

• 240 minutes

• 300 minutes

• 180 minutes