Time introduction to 24 hour time

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Powerpoint is an introduction to 24 hour time

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Time introduction to 24 hour time

  1. 1. 24 Hour Time<br />Learn <br />which <br />of <br />these<br />numbers <br />are <br />telling <br />you <br />about <br />time !<br />24 Hour time - Activity 1<br />1<br />
  2. 2. 24 hour time<br />12 hour time<br />24 Hour time ‘names’ each hour. <br />2<br />24 Hour time - Activity 1<br />
  3. 3. Two important things to know about 24 hour time……<br />24 hour time uses numbers only to show the time.<br />24 hour time does not use am or pm.<br />24 Hour time - Activity 1<br />3<br />
  4. 4. Defence forces <br />Who would use 24 hr time ?<br />24 Hour time - Activity 1<br />4<br />
  5. 5. ETA means Estimated Time of Arrival<br />Unit 4 – report ETA at base camp<br />ETA at base camp is 14:30 hours<br />24 Hour time - Activity 1<br />5<br />
  6. 6. Who would use 24 hr time ?<br /> Transport companies<br />24 Hour time - Activity 1<br />6<br />
  7. 7. Discuss these ideas with your teacher, <br />write some sentences about how <br />24 hour is different from 12 hour time.<br />write a sentence about where<br />24 hour time is used.<br />then in your exercise book:<br />24 Hour time - Activity 1<br />7<br />
  8. 8. Communicating and understanding<br />Look at the two next slides and talk about what has happened…..<br />24 Hour time - Activity 1<br />8<br />
  9. 9. The tide is good for fishing at 7 o’clocktomorrow.<br />I’ll pack a torch !<br />24 Hour time - Activity 1<br />9<br />
  10. 10. The tide is good for fishing at 0700 tomorrow.<br />Great- early in the day is the best time !<br />24 Hour time - Activity 1<br />10<br />
  11. 11. Using 24 Hour time stops confusion !<br />Look back at the slides showing who uses 24 hour time…. <br />Discuss: Why is that the best way of communicating time for them ? <br />24 Hour time - Activity 1<br />11<br />
  12. 12. Where do you see 24 hr time ?<br />Tide times <br />in the newspaper.<br />24 Hour time - Activity 1<br />12<br />
  13. 13. Tide times <br />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.<br />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.<br />Question Why do you think it is a good idea to have the <br /> times written in 24 hour time ?<br />Answer Using 24 hour time is a good way to show the tide<br /> times because ….<br />24 Hour time - Activity 1<br />13<br />
  14. 14. Where do you see 24 hr time ?<br />Travel timetables – eg buses, planes, trains<br />24 Hour time - Activity 1<br />14<br />
  15. 15. Think: Which circle of numbers shows 12 hour time ?<br />Do you understand why there are two different numbers around the outside of the circle ?<br />24 Hour time - Activity 1<br />15<br />
  16. 16. Use the clock face to convert the following times:<br />24 Hour time - Activity 1<br />16<br />
  17. 17. Language of time<br />12 hour time / 24 hour time<br />digital<br />analog<br />timetable / calendar<br />(middle) midnight / midday = noon<br />am = first 12 hours of the day<br />pm = next 12 hours of the day<br />h = hours<br />min = minutes<br />notation = way of writing something down – the writing ‘style’ you use<br />convert / conversion = change<br />24 Hour time - Activity 1<br />17<br />

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