How do I teach 12-hour and 24 hour time?
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How do I teach 12-hour and 24 hour time?
To convert from the 12 hour clock to the 24 hour clock is easy – you just need to add 12 to the hours in the day after midday. For example: 2 o’clock PM becomes 14:00 , as 2 + 12 = 14 .
How do I teach my child 24-hour clock?
If children find it tricky to convert between 24-hour clocks and 12-hour clocks, teach them this simple trick: Start with the number on your 24-hour clock, take away ten, then take away two, and you’ll find the equivalent 12-hour number. Children can test their knowledge with this Converting Times Worksheet.
How do you present a 24-hour clock?
A time of day is written in the 24-hour notation in the form hh:mm (for example 01:23) or hh:mm:ss (for example, 01:23:45), where hh (00 to 23) is the number of full hours that have passed since midnight, mm (00 to 59) is the number of full minutes that have passed since the last full hour, and ss (00 to 59) is the …
What is the difference between 12 hours and 24-hour clock?
There are two ways of telling the time: The 12-hour clock runs from 1am to 12 noon and then from 1pm to 12 midnight. The 24-hour clock uses the numbers 00:00 to 23:59 (midnight is 00:00).
Why is the clock 12 hours?
The 12-hour clock can be traced back as far as Mesopotamia and ancient Egypt. Both an Egyptian sundial for daytime use and an Egyptian water clock for night-time use were found in the tomb of Pharaoh Amenhotep I. Dating to c. 1500 BC, these clocks divided their respective times of use into 12 hours each.
Why do we have 12 and 24 hour time?
The Egyptians used a 12-hour sundial to tell time during the daytime and a 12-hour water clock at night. The Romans also used a 12-hour clock. Early mechanical clocks showed all 24 hours, but over time, clockmakers found the 12-hour system simpler and cheaper.
What’s the easiest way to learn military time?
A Quick Trick: Subtract 12 The 24-hour clock says 2200. If you want to know what it converts to on the 12-hour clock, SUBTRACT 12 from 22. It gives you 10 … 10 p.m!
How do you explain 12-hour clock?
The 12-hour clock is a time convention in which the 24 hours of the day are divided into two periods: a.m. (from Latin ante meridiem, translating to “before midday”) and p.m. (from Latin post meridiem, translating to “after midday”).
Why is 24 hour time better?
The 24-hour notation removes the ambiguity associated with am/pm usage and also makes it easier to express time across time zones. The only thing going for the am/pm notation is that is logical to use it with analog clocks. But those clocks have been in a decline for a long time now.
How do you make time telling fun?
Try these fun interactive activities, and your students will be telling time in no time flat.
- Make a paper clock.
- Color the spaces to learn the hours.
- Wear paper watches.
- Make a clock with linking math cubes.
- Take it outside with a hula hoop clock.
- Dance around for musical clocks.
- Shake up a carton of clocks.
