Class 4 Maths Chapter 1 Building with Bricks ( Practice Work)

Brick Patterns for Jagriti School

This is the true story of Jagriti School in Murshidabad (West Bengal). When its building was being made, there was a plan to make brick patterns on the floor and walls. Jamaal, Kaalu and Piyaar were the masons for the brick work. They wanted to get new ideas for the school building. So they took their other friends to see the old tomb of Murshid Kuli Khan. (See photos.)

This building has a big floor with about two thousand beautiful brick patterns. These were made by masons long back – about three hundred years ago.

Look how the bricks are arranged in these five floor patterns

Which floor pattern do you like the most? _____________

Have you seen such patterns anywhere?

The masons came back excited. Jamaal said –Ah! In those days they had made so many interesting brick patterns. We had forgotten these! Let us make some nice designs on the floor of this school. Each mason made a different brick pattern. The school is proud to have such a beautiful building! Children play and sing on it and also make new patterns themselves.

Which pattern is made in a circle?
In which pattern can you show mirror halves? Draw a line.
Now you draw some new floor patterns

How to Draw a Brick?

These are two photos of the same brick.

In one photo we can see only one face of the brick.

In the other we can see three faces.

Circle the photo showing three faces.

How many faces in all does a brick have?
Is any face a square?
Draw the smallest face of the brick
Which of these are the faces of a brick?Mark a()

Which of these is a drawing of a brick?Mark a ().

Make a drawing of this box to show 3 of its faces.

Can you make a drawing of a brick which shows 4 of its faces?

A Wall that will not Fall

One day Muniya and Zainab are playing with bricks and making their walls. Each makes a different wall.

Zainab says her wall will not fall easily. Masons too do not put bricks one on top of the other, as Muniya has done.

What do you think? Which wall will be stronger?

Look for walls where you can see different brick patterns.

Different Wall Patterns

Here are photos of three kinds of brick walls. Can you see the difference in the way the bricks are placed?

Now match the photo of each wall with the correct drawing below:

This 'jaali' is from a library building in Kerala.

Find out

Look for other arches around you and draw them.

Have you seen arches in a bridge?

Where else have you seen an arch? ___________________

A Special Arch

In this photo from Orchha, see how the arch is made. It has a nice name –GhoonghatWaali Mehraab(the arch with a veil).

Isn't the 'jaali' of this window beautiful? It is made of thin bricks. Have you ever seen thin bricks? Look around.

Jamaal and Kaalu, the masons of Jagriti School, said that their grandfathers used many different kinds of bricks. Some of these are shown in this photo.

Which of these bricks have curved edges?
How many faces do you see of the longest brick?
Is there any brick which has more than six faces?

Find Out: The Size of a Brick

Have you seen bricks of different sizes?

Take one brick and measure it.How long is it? __________________
How wide is it? __________________
How high is it? __________________
Muniya wants to make a wall 1 metre long. How many bricks will she need to put in a line? _________

Bricks and Bricks – Hot and Fresh!

Ganesh and Sahiba live near a kiln where bricks are made.

Can you guess how high is the chimney here? Is it:

a) about 5 metres?

b) about 15 metres?

c) about 50 metres?

Ganesh and Sahiba love to look at the pattern of bricks in the long, long lines kept out to dry. They also watch how bricks are made.

Here are four pictures from the brick kiln. These pictures are jumbled up. Look at them carefully.

Write the correct order.

How do you think a brick is made out of soil dug from the earth? Look at the pictures and discuss in groups.

Have you seen a brick kiln? Did you try to guess the number of bricks kept there?

There are many, many brick kilns in India – thousands of them!

More than one hundred thousand! Can you imagine how big this number is? This number is also called one lakh . Can you try to write it? Ask your friends where they have heard of a lakh.

Find out

Look at these photos and guess how many bricks are carried by this truck.

Also find out from a truck driver how many bricks they can carry in one truck.

Mental Math: Bhajan Buys Bricks

Bhajan went to buy bricks. The price was given for one thousand bricks. The prices were also different for different types of bricks.

Bhajan decided to buy the new bricks from Brickabad. He bought three thousand bricks.

How much did he pay? 

Guess what he will pay if he buys 500 old bricks.$$$$

Click Here To Check Your Answers

Class 4 Maths Chapter - 2 Long and Short (Practice Work)

How Far Apart are the Dots?

• Guess the distance between any two dots. How many centimetres is it? Now measure it with the help of a scale. Did you guess right?
• Which two dots do you think are farthest from each other? Check your answer.
• Which two dots are nearest to each other? Check your answer.

Children can play this game in pairs, making dots on a plain sheet and asking their partner to guess the distance. This can also be extended to estimating bigger distances on the floor.The border of this chapter should also be used as a scale.

The Shorter Line

Akbar was a famous king. He had a smart minister called Birbal. Once Akbar gave him a difficult question. He drew a line on the floor.

Look at the picture and explain how Birbal made Akbar's line shorter.

Now can you be as smart as Birbal? Make his line shorter without erasing it. Just think _ is there any longest line?

Try This

• Make her right arm1 cmlonger than the left arm.

• Draw a cup 1 cmshorter than this cup.

• Draw a broom half as long as this broom.

• Draw another hair of double the length.

How Tall Have You Grown?

Do you remember that in Class 3 you measured your height?

Do you think you have grown taller?

How much? ____________ (cm)

Have your friends also grown taller?

Find out and fill the table below.

Friend's name	Last year's height(in cm)	This year's height(in cm)	How many cm have they grown

Jhumpa once read a list of the tallest people in the world. One of them was 272 cm tall! That is just double of Jhumpa's height. How tall is Jhumpa? cm.

Imagine

• Could that person pass through the door of your classroom without bending?
• Will his head touch the roof of your house if he stands straight?

The Long and Short of Your Family!

• Who is the tallest in your family? _____
• Who is the shortest in your family? _____
• What is the difference between their heights? _____

Inter-School Sports Meet

Race

This is a 100 metre race for girls. Arundhati is nearest the finishing line. She is about 6 metres from it.

Behind her is Rehana. Konkana and Uma are running behind Rehana. Look at the picture. To answer the questions below

a) How far is Rehana from Arundhati? 

b) How far ahead is Rehana from Konkana and Uma? 

c) How far are Konkana and Uma from the finishing line? 

Have you heard about a 1500 m or 3000 m race? (You remember that 1000 metres make 1 kilometre and 500 metres make half a kilometre.)

• So you can say

In a 1500 metres race people run km

In a 3000 metres race people run  km

Have you heard about marathon races in which people have to run about 40 kilometres? People run marathons on roads because the track of a stadium is only 400 metres.

10 rounds of a stadium track =km

So, if you run a marathon on a stadium track, you will have to complete rounds!

Long Jump

This is the long jump for boys.

Dhanu has the longest jump of 3 metres 40 cm. Gurjeet is second. His jump is 20 cm less than Dhanu's. Gopi comes third. His jump is only 5 cm less than Gurjeet's jump.

• How long is Gurjeet's jump? cm
• How long is Gopi's jump?cm
• Try and see how far you can jump.
• How far can you throw a ball? ___________ metres.
• Look for a big ball, like a football or volleyball. How far can you kick it? ___________

Here are the Indian Records and World Records for some jumps.

Sports	World Record	Indian Record
High jump(Men)	Javier S.(2m 45cm)	Chandra Pal(2m 17cm)
Long Jump(Men)	Mike P.(8m 95cm)	Amrit Pal(8m 8cm)
High jump(Women)	Stefka K.(2m 9cm)	Bobby A.(1m 91cm)
Long Jump(Women)	Galine C.(7m 52cm)	Anju G.(6m 83cm)

Find out from the table _

1. How many centimetres more should Chandra Pal jump to equal the Men'sWorld Record for high jump?
2. How many centimetres higher should Bobby A. jump to reach 2 metres?

Remember that1m= 100 cm

Half metre =  cm

3. Galina's long jump is nearly

a) 7 metres

b) 7 and a half metres

c) 8 metres

4. Look at the Women's World Records. What is the difference between the longest jump and the highest jump? cm
5. If Mike P. could jump centimetres longer, his jump would be full 9 metres.
6. Whose high jump is very close to two and half metres?

a) Stefka K.

b) Chandra Pal

c) Javier S.

d) Bobby A

Running Exercise

The doctor has told Devi Prasad to run 2 km every day to stay fit. He took one round of this field. How far did he run? km

The field was very far from his home. So he chose a park nearby. The boundary of the park was about 400 metres long.

• How many rounds of the park must Devi Prasad run to complete 2 km
• One day the weather was very good and a cool breeze was blowing. He felt so good that he kept jogging till he got tired after 8 rounds. That day he ran  km and metres !

How Many Rooms High?

The Qutab Minar is 72 metres high.

About how many metres high is your classroom?

Guess how many rooms, one on top of the other, will be equal to the Qutab Minar. ______________

Explain how you made a guess

From Kozhikode to Thalassery

Subodh is going to Kozhikode which is 24 kilometres (km) away.

Manjani is going to Thalassery which is 46 km away in the opposite direction.

How far is Kozhikode from Thalassery? km

How Far is Your Home from School?

Momun comes to school from very far. He first walks about 400 metres to the pond. With slippers in his hands, he then walks 150 metres through the pond. Next he runs across the 350 metres wide green field. Then he carefully crosses the 40 metres wide road to reach his school

How much does Momun walk every day to reach school? metres. Is it more than 1 km? 

• Find out how far your friends live from school and fill the table.Write in metres or kilometres

Friend's name	Distance of home from school

Who among you lives nearest to the school? ___________

Who lives farthest from the school? ___________

How many children live less than 1 kilometre away from your school? ____________

Is there anyone who lives more than 5 km away from the school?

How do they come to school? __________________________________

Guess and Find Out

1. How long is the thread in a reel?
2. How long is the string of a kite reel? Can it be more than a kilometre long?
3. If a handkerchief is made out of a single thread, how long would that thread be?

Children will get a good idea of 1 kilometre distance if it is possible to take them for a 1 km walk, preferably along a straight path.

Try to find out:

1. Which is the highest building that you have seen? About how many rooms high was it?
2. How high can a kite go? Can it go higher than the Qutab Minar?
3. How high can a plane fly? Can it fly higher than Mount Everest which is about 9 kmhigh?
4. Have you ever seen clouds below you?

It would be useful here to discuss about children's experiences, particularly when talking about clouds and their height, so that they get an intuitive feel of relative heights, and can begin to estimate large distances.

Click Here To Check Your Answers