Category : 2nd Class
LEARNING OBJECTIVES
This lesson - will help you to:
Amazing Facts
QUICK CONCEPT REVIEW
A clock has numbers 1 to 12 on its face and 2 hands. The face of a clock is called dial.
As we have studied in earlier classes that the long hand in the clock is the minute hand and the short hand is called hour hand. The hour hand takes one hour to move from one number to the next.
The minute hand moves faster and takes one hour to move one round that is to start from 12 and to get back to 12.
We use am' for time from 12 midnight to just before noon. We use 'pm' for time from 12 noon to just before midnight.
READING TIME
How will you read a time? How will you know about your recess time? Come let us understand with some examples.
Look at the following clock.
Historical preview
1. The minute hand is at 12 and hour hand is at 8. Therefore time is 8:00. If it is morning, the time will be 8:00 am. If it is night the time will be 8:00 pm.
Now carefully observe following clock.
2. The numbers 05. 10, 15 shown on the clock face shows minutes. Count in fives to get these minutes.
Hour hand in given clock is between 1 and 2 and minute hand is at 6. Now multiply 6 by 5 to get the minutes. (\[\text{6 }\times \text{ 5 }=\text{ 3}0\]minutes).
Therefore time is 1 : 30. If it is morning the time will be 1:30 am and if it is noon then we will write 1: 30 pm.
There are 60 minutes in an hour and one minute is equal to 60 seconds
1 day = 24 hours
1 hour = 60 minutes
1 minute = 60 seconds.
Real Life Examples
I started eating lunch at 1:00 pm. When the minute hand is at 12 and hour hand is at 1. It takes 15 minutes to complete my lunch. Now the minute hand is at 3 and hour hand is at 1. It is quarter hour after 1 o'clock. The time is quarter past 1 or one fifteen (\[\text{3 }\times \text{ 5 }=\text{ 15}\]minutes) we write it as 1; 15 pm
CALENDAR
How will you know on which day your birthday falls? You can check by the help of calendar.
Calendar is the systematic arrangement of dates and months of a year. There are 7 days in a week.
Saturday and Sunday are called weekend and there are 4-5 weeks in a month. A calendar helps us to know about days, weeks, months and year.
The following calendar shows the number of days, along with the dates in the month of November.
REPRESENTATION OF DATE
A date can be represented as date/month/ year, for example; 15/11/2014 or 15-11-2014 or 15th November 2014
MONTH
There are 12 months in a year. January is the first month and December is the last month.
There are 30 or 31 days in a month. February contains 28 or 29 days. There are total 365 days in a year. In a leap year there are 366 days and it comes after every four years.
Number of Days |
Name of the Months |
31 |
January |
28 of 29 |
February |
31 |
March |
30 |
April |
31 |
May |
20 |
June |
31 |
July |
31 |
August |
30 |
September |
31 |
October |
30 |
November |
31 |
December |
You need to login to perform this action.
You will be redirected in
3 sec