Today we reviewed finding elapsed, start and end time using longer units of length i.e. days, weeks, months, years, decades, centuries and millenniums.
Make sure you show how you arrived at your answers. I know some of you are very good at finding elapsed time mentally which is great. But I need to know your thinking... sometimes your brains work in very ingenuous ways!
We learned about our last topic today, the 24 hour clock. This is not a grade 4 expectation, but it's great to know. Students shared times they have seen the 24 hour clock:
- Military
- Arrivals and Departures
- Europe
Use of the 24 hour clock is greater in other regions of the world.
When we use the 24 hour clock we do not have to include am or pm because hours are not repeated. The 12-hour and the 24 hour clock are the same from 1:00 am to 12: 59 pm. Remember, two digits are always used for the hour, so sometimes there is a 0 in front of a single digit hour. Instead of 1:00 pm, the 24 hour clock continues counting past 12 to 13. So 1:00 pm is 13:00. Midnight is 00:00. The minutes and seconds are the same in both clocks.
Changing from the 12 hour to 24 hour clock:
The hours are the same for 1:00 am to 12:00 pm except there may be a zero. For times after 1:00 pm, you add 12 hours to the pm time.
Changing from the 24 hour to 12 hour clock:
The hours are the same for 01:00 to 12:00. For times after 13:00, you subtract 12 hours.
Here are some practice questions changing from 12 to 24 hour clock and 24 to 12 hour clock:
Elapsed time game:
The rest of the day was a finish and "ketchup" day. Everyone finished their digestive system test and most students finished their reading test.
We will complete Religion and our Respiratory System model tomorrow.
Best of luck to the Junior Hockey team tomorrow!
If you would like to complete your "Belonging School Climate Survey" at home, you're more than welcome.Go to ldcsb and click on the icon and follow the instruction. The more you tell us, the better we can make St. Nicholas a safe and welcoming place to grow and learn.
Here's a great video about Eric Walters. He's coming to our school tomorrow!
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