Class 4 Maths Chapter - 3 Tik Tik Tik

Pamposh and Shazia were discussing whose home is farther from school.

PRACTICE TIME

Three friends read time from a clock. Who is right?

Show the following times in the clock:

Do you like sky watching? If yes, then this one should interest you:

a) At what time does the sun rise at your place?_____

b) When does the sun set?______

Dose the sun rise and set at the same times every day?

Look at a newspaper and see the time of sunrise and sunset in different months.

Look at the photo and guess the time at this place.

This photo was taken in Paris, France. In Paris the sun sets after 9 pm at night during summer. This photo was taken at night! But in winter it becomes dark here by 4 pm in the evening.

Find out

How long will it take the minute hand to move from

a)min

b)min

c) min

d) min

Draw where the hands will be:

How long does your school assembly take? _________

How long is your lunch break? _________

How long is your games period? _________

Is it the same as all the other periods? _________

How many minutes can these activities take? Make a guess and then check at home

Activity Time

In one minute, how many times can you –

a) Snap your finger _______________

b) Skip a rope _______________

c) Jump up and down _______________

d) _______________ _______________

Write more such fun activities in this column.

Here is another challenge for you. How long can you–

a) Speak non-stop _______________

b) Stand on one leg _______________

c) Sing 'Aaaaa....' without a break ______

How long do you take to–

a) Run a 50 metre race ______________

b) Collect 50 pebbles from the ground ______________

c) Count 1 to 100 ______________

Let's look at a clock again! Solve this one–

a) The minute hand started from '2'. How many minutes will it take to come back to '2' again? _______________

b) What happens to the hour hand? Does it also move? How long will it take to move from one number to the next?

c) Look around you and list the activities that take about one hour to complete.

_________________
_________________
_________________
_________________
_________________

How long does it take to cook dinner at home?

More than an hour/less than an hour.

Ask your father if he can cook as fast as your mother does.YES/NO

Which games take less than an hour to finish? __________________________

How long does a football match take?

Children will enjoy doing activities to see all the things they can do in one minute. Observing activities at home will give them a sense of time and also help them value the effort of others

Rani's Diary

Mark these in the correct order on Muniya's Time Line.

Muniya got her first tooth in September. How many months old was she then? How many months have passed from March to September?

(a) she first sat up? _________________

(b) she got her first tooth? _________________

What did she do first –

walking/eating a banana?
crawling/standing?

Rani had a pet puppy. After 2 weeks it opened its eyes. She watched it grow like this:

Now make a time-line of this dog's life in your notebook.
Note the differences between Muniya and Rani's puppy:

Position	Muniya(age)	Puppy(age)
Started walking
Ate food for the first time
Got the first tooth

Find out

Do all animals grow at the same speed?

Discuss about the growth of–

A hen
A cow
A bird

Draw pictures of the baby animal and the big animal.

Here are the pictures of grandfathers posing for a photograph. Who looks the oldest to you?

How much older is Appu’s grandfather than Rani’s grandfather?
Will Chuchoo’s grandfather ever grow as old as Appu’s grandfather?
How much younger is Chuchoo rat’s grandfather than Rani’s grandfather?

This is a good opportunity for children and teachers to find out about the life spans and growth patterns of different animals. The idea is to compare and discuss without having to memorise any such information

Holidays are Fun!

Atif's holidays had begun. He was very excited. He had made some wonderful plans and wanted to tell his cousin Shabana. So he wrote her a letter–

Ajmer

1/5/06

Dear Shabana aapa,

Hello!

How are you? I am fine here. Aapa, my holidays have started from today! I am going to my Nani's place on 5/5/06. I will be back on 20/5/06. My school will reopen on 30/6/06. When does your school close? Why don't you come here?Wewill have great fun!

Bye for now Atif

Shabana who stays in Nagpur, got this letter on 6/5/06. She wrote back to Atif–

Nagpu

7/5/06

Dear Atif,

Hello!

I am doing well here. I got your letter yesterday. Happy holidays! My school will close on 1st June 2006. It will reopen on 10th August. I will go on a school trip to Goa and will return on 7/6/06. I will try to come to Ajmer afterthat.

Bye Atif

Atif wrote his letter on 1/5/06. You remember how we write a date in numbers?

1/5/06 is 1 May 2006.

Now write which dates these stand for –

5/5/06 ___________________________

20/5/06 ___________________________

7/6/06 ___________________________

1/1/07 ___________________________

Write these dates in numbers.

1 June 2006 _____________________________

30 May 2006 _____________________________

10 Aug 2007 _____________________________

How long did it take the letter to reach from Ajmer to Nagpur?days
How many days will Atif spend at his Nani's place?
Fill in the table:

Who has got longer holidays–Shabana or Atif?

Which long holidays do you get in school? Fill the table.

Occasion

Dates
From To

Number of days

Summer Holidays
Autumns Break
Winter Break
Holidays after the exam

On 15 May 2006 Chandran went to a shop to buy butter. He checked the packet to see if this butter was safe to eat.

It was written on the packet– Best before 180 days from the date of packing.

Then he checked the date of packing. It was 15/01/06.

Help him find out if he should buy this butter or not.

– In which month was the butter packed?

– Which month will it be 180 days after 15/01/06?

– Can Chandran eat it on 15th May 2006?

Do you ever check the date of packing of things you buy?

Have you seen medicines which have the expiry date written on them? It tells you after which date it is unsafe to take the medicine.

Find Out

Which are the other things that come with an expiry date?

On a cough syrup it was written:

Mfg. date 07/03

This shows it was made in July 2003.

Exp. Date 07/05

This shows the month and year till when it is safe to take.

What month and year is written as 07/05 ? _______________

Would it be safe to take the cough syrup in September 2005? __________

Children are not expected to know the words 'manufacturing' or 'expiry' dates, but only to recognise these as symbols that show when the medicine is made and till when it is safe to take. Teachers could encourage children to read and observe more such dates on different products

Tutun Missed the Train

Tutun's school had closed for the summer holidays. He went to his grandma's place. He met a lot of his cousins there. He was enjoying himself and didn't want to go back home.

Tutun and his parents reached the station at 5:15. But guess what? They had actually missed the train!

Can you guess why they missed the train?

Actually the train had left at 5:30 in the morning! Tutun's parents were upset. They asked the station master–

Time by your watch(12-hour-clock)	Time by a 24-hour clock
1 o' clock in the afternoon	13:00 hours
2 o' clock in the afternoon	14:00 hours
3 o' clock in the afternoon	___________
3:30 in the afternoon	15:30 hours
6 o' clock in the evening	___________
9 o' clock in the evening	___________
12 o' clock in the midnight	___________

Suppose a train leaves at 8:30 at night. The time written on the Railway ticket would be

You must have noted the time of sunrise and sunset.

Write here using am and pm.

Time of sunrise
Time of sunrise

Where have you seen a 24-hour clock being used?

______________________
______________________
______________________

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Tuesday, July 7, 2020