This document provides information about 24-hour time. It explains that 24-hour time uses numbers from 00 to 23 to indicate hours, without using am/pm. It is used by transportation companies, the military, and for listing tide times, as it avoids confusion. Examples show a fishing trip scheduled for 0700 to avoid ambiguity. Using 24-hour time ensures clear communication important for organizations where timing is essential.

1. 24 Hour TimeLearn which of thesenumbers are telling you about time !24 Hour time - Activity 11

2. 24 hour time12 hour time24 Hour time ‘names’ each hour. 224 Hour time - Activity 1

3. Two important things to know about 24 hour time……24 hour time uses numbers only to show the time.24 hour time does not use am or pm.24 Hour time - Activity 13

4. Defence forces Who would use 24 hr time ?24 Hour time - Activity 14

5. ETA means Estimated Time of ArrivalUnit 4 – report ETA at base campETA at base camp is 14:30 hours24 Hour time - Activity 15

6. Who would use 24 hr time ? Transport companies24 Hour time - Activity 16

7. Discuss these ideas with your teacher, write some sentences about how 24 hour is different from 12 hour time.write a sentence about where24 hour time is used.then in your exercise book:24 Hour time - Activity 17

8. Communicating and understandingLook at the two next slides and talk about what has happened…..24 Hour time - Activity 18

9. The tide is good for fishing at 7 o’clocktomorrow.I’ll pack a torch !24 Hour time - Activity 19

10. The tide is good for fishing at 0700 tomorrow.Great- early in the day is the best time !24 Hour time - Activity 110

11. Using 24 Hour time stops confusion !Look back at the slides showing who uses 24 hour time…. Discuss: Why is that the best way of communicating time for them ? 24 Hour time - Activity 111

12. Where do you see 24 hr time ?Tide times in the newspaper.24 Hour time - Activity 112

13. Tide times Think about how the tides go in and out all day every day, never stopping. The times for high tides and low tides change everyday.Lots of people plan to go fishing at the best times – the best times are at the change of the tide. The change of tides can happen during the day or during the night.Question Why do you think it is a good idea to have the times written in 24 hour time ?Answer Using 24 hour time is a good way to show the tide times because ….24 Hour time - Activity 113

14. Where do you see 24 hr time ?Travel timetables – eg buses, planes, trains24 Hour time - Activity 114

15. Think: Which circle of numbers shows 12 hour time ?Do you understand why there are two different numbers around the outside of the circle ?24 Hour time - Activity 115

16. Use the clock face to convert the following times:24 Hour time - Activity 116

17. Language of time12 hour time / 24 hour timedigitalanalogtimetable / calendar(middle) midnight / midday = noonam = first 12 hours of the daypm = next 12 hours of the dayh = hoursmin = minutesnotation = way of writing something down – the writing ‘style’ you useconvert / conversion = change24 Hour time - Activity 117