Class 3 Maths Chapter 1 Where to look From (Ch. Practice)

Our teacher told us to draw a picture of a car. We all drew the car differently. Next day, when we showed our pictures to each other, we were very excited. But Anshul started laughing. He was looking at Dheeraj's drawing of a car.

Anshul said it looks like a small box kept in a bigger one. Then Anshul showed his drawing to Dheeraj.

Both of them drew the picture of the same car. But the drawings look different.

Dheeraj said he had looked at the car from the terrace. Do you think his funny drawing is right?

• Have you looked at things from different sides? Do they look the same or different?

• Look at the pictures drawn here. How does the table look from the side? Which picture is from the top?

Some pictures are drawn below. Imagine how these things will look if seen from the top.

Will they look like this?

PRACTICE TIME

• A cat is peeping into a classroom. Can you help her find out where the teacher is?



• Here are some pictures. Find out from where you have to look to see the things this way.



• Draw top views of a few things and ask your friends to guess what they are.

Rangoli

You can also try and use the dots given below to make patterns.Two examples have been drawn here

Make Other Patterns Yourself

• Copy these shapes on the dot grid. Note that some lines in the shapes are straight and some are not.




• Use the dot grid given below to draw your own designs and shapes.



• Complete these figures to make squares and rectangles.



• On the dot grid given below, draw the following:
  a) a kite          b) a leaf            c) a flower
  d) a boat           e) a star            f ) a pot

Note for teachers and parents: Free play with shapes on a dot grid can help develop children's understanding of shapes and symmetries. The chapter begins with activities to show how 2-dimensional pictures can represent 3-dimensional objects as seen from different perspectives. This is related to symmetries, an important aspect of shapes further developed in Chapter 5.

Tit for Tat

One day Amina met a painter

After a while the painter showed her the picture.

Amina gave him a hundred-rupee note.

The painter had made many such pictures in which he drew only one half of the things. Draw the other half of these pictures and find out what these things are, Try doing it with a mirror.

Can we repeat the painter's trick, while drawing pictures of the following?

If you ask the painter to draw things which cannot be divided into two similar mirror halves, then he cannot play the trick.
Draw three more such things which do not have similar mirror halves.

Mirror Halves

Look at the pictures given below. Does the dotted line divide each picture into two similar mirror halves?

Give some more examples.

Using a dotted line, can you divide the following pictures into two similar halves?

Using such letters we can also make words which have similar halves.

Making A Mask

You can make more such masks by taking help from the following pictures.

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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.$$$$

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