std 3 Maths SCERT[Lesson 6 Time]
Lesson 6
Time
1st day[20/2/2021]
*Clock, Watch, Digital watch are devices that shows time or measure time .
*measuring time in hours , minutes and seconds
This is a clock . It has 2 hands. The longer hand shows the minutes. The dial of a clock is divided into 5 equal parts. Each part is a minute. When minute hand completes one circle the hour hand moves by 1. That is an hour. The shorter hand shows the hours.
1 hour = 60 minutes
In the clock given above the longer hand is at 12.Shorter hand is at 9. The time is 9 [9 O'clock]. We can write
9 O'clock as 9:00. Time taken by the hour hand[shorter hand] to move from 1 division to another is 1 hour.
The hour hand takes 12 hours to complete one rotation.
Time taken by the minute hand[longer hand] to move from the 1 division to another is a minute.
The minute hand take 60 minutes to complete one
rotation.
Activity 1
Do this page 88
Do this page 85
2nd day 22/2/2021
10:11 (2 dots between hours and minutes)
1X5=5
2x5=10
3x5=15
4x5=20
5x5=25
6x5=30
7x5=35
8x5=40
9x5=45
10x5=50
11x5=55
12x5=60
Read the time
The hour hand covers 10.The minute hand is at 2.
2x5=10
Time is 10 hours 10 minutes.
We write ,Time 10:10
The hour hand covers 7. The minute hand at 11.
11x5=55
Time is 7 hours 55 minutes.
We write, Time 7:55
Do this page 89
Do this page 90
3rd day [25/2/2021]
SECOND
Second is used to represent time that is less than a minute.
The thin long needle of the clock is the second hand. It is
60 seconds when the second hand makes a full rotation.
60 seconds is 1 minute
60 seconds =1minute
Write the time
Draw the hands of the clock
Do these pages:92,93,94 and 95
5th day [ 3/3/2021]
Different in time
4:5 to 4:55
10,15,20,25,30,35,40,45,
50, 55
10x5=50
50minutes
-----------------
-----------------
Do this pages 96,97
1st--->I00 minutes
2nd--->110 minutes
3rd ---->95 minutes
2nd person worked
more time.
6th day
CALENDAR
Calendar is an important guide of our life. We can not plan our activities without the help of an calendar. There are different calendars like Lunar Calendar, Solar Calender, Roman Calendar, MalayalamCalendar, etc.
In a Universal Calendar a year has 12 months.
English Months
* January
* February
*March
*April
* May
*June
*July
*August
*September
*October
* November
*December
year↔️Month↔️Day
Easy way to remember
Generlly y A year has 365 days. But there are some year in which the numbers of days will be 366. This year is known as Leap Year. In a leap year february has 29 days.
*A year has 12 months.
*A year has 54 weaks
*A year has 365 days.
*A month has 4 weaks
*A month has 30 days.
*A weak has 7 days.
*A day has 24 hours.
*A hour has 60 minutes
*A minute has 60 seconds
Activity 1
Answer the following questions based on Calendar
*Name the month and year of this Calendar Sheet?
*Name the days occur 5 times in month?
*List the dates that fall on Sunday
*Which day is December 25?
*what is the importance in 25th December?
Activity 2
Make the calendar for January 2022
Malayalam months
*Chingam
*Kanni
*Thullam
*Vrischikam
*Dhanu
*Makaram
*Kumbam
*Meenam
*Medam
*Edavam
*Midhunam
*Kaikidakam
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