Category : 3rd Class
This lesson will help you to:—
Real life Examples
QUICK CONCEPT REVIEW
1. A clock helps us in knowing time.
In a clock there are three needles or hands- 'hour' hand, 'minute' hand, and "second" hand
The shortest hand is 'hour' hand.
The longest hand is 'minute' hand.
The thinnest hand which is moving very fast which is the "second" hand.
Look at the picture given below:
In order to read the clock, look at the hour hand first and then look at the minute hand.
For example, if the hour hand is at "3" and minute hand is at '12' then the time is 3o'clock.
If the minute hand is at:
‘1’, it means 5 minutes have passed so the time will become 3:05
‘2’, it means 10 minutes have passed so the time will become 3:10
'3', it means 15 minutes have passed so the time will become 3:15
'4', it means 20 minutes have passed so the time will become 3:20
'5', it means 25 minutes have passed so the time will become 3:25
‘6’, it means 30 minutes have passed so the time will become 3:30
'7', it means 35 minutes have passed so the time will become 3:35
'8', it means 40 minutes have passed so the time will become 3:40
'9', it means 45 minutes have passed so the time will become 3:45
'10', it means 50 minutes have passed so the time will become 3:50
'11', it means 55 minutes have passed so the time will become 3:55
Then, again the minute hand comes at '12', now the hour hand will come at '4' so the time will become 4 o'clock.
Now look at the clock in your room and note down the time in your notebook.
2. A calendar helps us to know about days, weeks, months and year.
We read the calendar to tell the days and dates.
Misconcept / Concept
Misconcept: Interpretation of long hand for ‘hour’ and small hand for ‘minute’
Concept: The longest and helps in determining ‘minutes’ and the shortest hand helps in determining ‘hour’
Misconcept: Interpretation of numbers 1, 2, 3,……, 12 as 1, 2, 3, …….., 12 for determining both hours and minutes.
Concept: People usually write the number 1, 2, 3, ……, 12 as it is for writing minutes which is wrong. In order to determine the minutes passed, multiple the number the ‘minute’ hand is pointing with 5.
In order to read the calendar, look at the date first and then look at the day on which it falls. The month and the year are always mentioned above it.
For example, 15th November 2012 falls on Thursday.
A date is written in the following ways:
Date/month/year e.g. 15/11/2012
Date-month-year e.g. 15-11-2012
Date month' year e.g. 15+h November' 2012
Now write your birth date in your notebook using different formats.
1st January 2013 or 01/01/2013
Do you remember the date when you were born?
READING A CALENDER
Look at the hour hand
read the number at which the hour hand is pointing
Look at the minute hand
Read the number at which the minute hand is pointing
READING A CLOCK
Find the date
find the day on which the date is falling
Month and year is given at the top
Combine all of them in the form: date/month/year
SHORTCUT TO PROBLEM SOLVING
You need to login to perform this action.
You will be redirected in 3 sec