# MATH

• WELCOME TO MATH!

Today I'd like to review telling Time.

Each mark on an analog clock stands for one minute.
There are 60 marks on the clock because there are 60 minutes in one hour.
The
numbers on a clock are marked every five minutes.
If you add five each time you land on a number beginning at the top of the clock (with 1 being the first number you land on), then you follow the numbers around the clock, you will see that you are skip counting by fives.
Please open your textbook to page 288, where you will see a clock which shows 5 minutes after 10, or 10:05.

Please look at the 2nd clock on the page, which shows the time of 10:36.
If we skip count by fives from the top of the clock, we will have counted to 35 by the time we reach the number 7 on the clock.
Actually, the minute hand on this clock is pointing at the mark just after the 7, so it's 35 minutes plus one more minute, or 36 minutes.
The time is 36 minutes after 10, or 10:36.

Now here's the tricky part. We can call 10:36 by another name.
Rather than talking about how many minutes it is AFTER the hour, we can also talk about how many minutes it is BEFORE the next hour.
The next hour after 10 is 11. So when it is 10:36, how many minutes will it take to get to 11:00?
Well, let's count four marks, or minutes, from where the hand is pointing, which will put us on the 8. Now we can skip count by fives to the top of the clock.
So 4 + 20 = 24.
10:36 is also
24 minutes before 11:00.

Now it's your turn to practice!
I ALSO CHALLENGE YOU to go back and take a look at page 105.
Try and figure out 'Quarter Hours,' which are described at the top of the page.
Look at where the minute hands are pointing in each picture, and then read the description of the time beneath the picture.
I'm sure you are accustomed to hearing people refer to time as 'Quarter after...' or 'Quarter to ....' or maybe even 'It's half past ....'
If you get stuck, don't be concerned; just try your best and do what you can :)

***** PLEASE SUBMIT MATH WORKBOOK PAGES 105 & 106 *****

Tomorrow we will work with 'Elapsed Time,' and on Thursday we will have our final Math test :)