NCERT solutions for Math - Magic [English] Class 4 chapter 1 - Building with Bricks [Latest edition]

Look how the bricks are arranged in these five floor patterns.

Which floor pattern do you like the most?

(1)	(2)	(3)
(4)	(5)

Have you seen such patterns anywhere?

Which pattern is made in a circle?

In which pattern can you show mirror halves? Draw a line.

(A)	(B)	(C)
(D)	(E)	(F)
(G)	(H)	(I)
(J)	(K)

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.

1. How many faces in all does a brick have?
2. Is any face a square?
3. 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 box which shows 4 of its faces?

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:

How many different patterns can you see in these two photos?

This is a drawing of another beautiful 'jaali'.

Now colour some bricks red and make your own patterns in the wall drawn below.

Can you see the window (jharokha) in this photo of the school?

Now draw some jharokha patterns on the wall here. You can shade it black.

• Have you seen arches in a bridge?
• Where else have you seen an arch?

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.

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

Have you seen bricks of different sizes?

Take one brick and measure it.

1. How long is it? _____
2. How wide is it? _____
3. How high is it? _____

Muniya wants to make a wall 1 metre long. How many bricks will she need to put in a line?

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

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

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.

A	B
D	C

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

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

1. Bhajan decided to buy the new bricks from Brickabad. He bought three thousand bricks. How much did he pay? ______
2. Guess what he will pay if he buys 500 old bricks.