24HR Clock

Mathematics

Grade: 6

Theme/Strand: Measurement

Focus Question: How do I calculate and use the various measurements around me?

Use the 24-hour clock in problem situations

Who uses the clock? The Army, The Navy, Airlines, Shipping Lines, Railways, Airports etc

Activities

Complete the following in their different tiered level

Tier 2

In the 24-hour clock, 15:30 is the same as __________ in the 12-hour clock.

If it is 21:00 in the 24-hour clock, it means it is __________ PM in the 12-hour clock.

The time 00:00 on a 24-hour clock represents __________ in the 12-hour clock.

To find out how many hours have passed between 09:00 and 17:00, you would calculate __________.

In the 24-hour clock, 12:00 represents __________, while 24:00 represents __________.

Tier 3

Tier 1

Convert the following times from the 12-hour clock to the 24-hour clock.

• a) 2:15 PM = _______________

• b) 11:45 PM = _______________

• c) 7:30 AM = _______________

• d) 1:00 PM = _______________

Convert the following times from the 24-hour clock to the 12-hour clock.

• a) 14:20 = _______________

• b) 23:50 = _______________

• c) 09:05 = _______________

• d) 00:30 = _______________

Extension Activities

Games

Lesson Activities