3.23 To read analogue time and write 24-hour time

Mathematics

Measurement and time

Time

Educator section

Memorandum

1.

1.1 07.30

1.2 21.15

1.3 05.50

1.4 22.40

1.5 19.00

Leaner section

Content

• At what time did you go to bed last night?

Half past eight?

Eight thirty?

Twenty thirty?

Do you still remember?

60 s (seconds) = 1 min (minute)

60 min = 1 h (hour)

24 h = 1 d (day)

7 d = 1 wk (week)

365 d = 1 a (year)

366 d = 1 leap year

52 wks (approximately) = 1 a

12 months = 1 a

100 a = 1 century

Activity: to read analogue time and write 24-hour time [lo 4.1]

1. In Grades 4 and 5 you did quite a lot of work involving time. Let's see whether you are able to apply your knowledge. Write the following according to the international system of writing.

1.1 half past seven (a.m.) è _______:_______

1.2 quarter past nine (p.m.) _______:_______

1.3 ten to six (a.m.) _______:_______

1.4 twenty to eleven (p.m.) _______:_______

1.5 seven o’clock (p.m.) è _______:_______

Assessment

Learning Outcome 4: The learner will be able to use appropriate measuring units, instruments and formulae in a variety of contexts.

Assessment Standard 4.1: We know this when the reads, tells and writes analogue, digital and 24-hour time to at least the nearest minute and second.