1 where to look from - prashanth...

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1 Where to Look From 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? Will they look like this? Some pictures are drawn below. Imagine how these things will look if seen from the top. 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. 1 Anshul said — it looks like a small box kept in a bigger one. Then Anshul showed his drawing to Dheeraj. Dheeraj said he had looked at the car from the terrace. Do you think his funny drawing is right? Both of them drew the picture of the same car. But the drawings look different.

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Page 1: 1 Where to Look From - Prashanth Ellinancertbooks.prashanthellina.com/class_3.Mathematics.Mathematics/ch … · 1 Where to Look From Have you looked at things from different sides?

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Where to Look From

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

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

Will they look like this?

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

Our teacher told us to draw a picture of acar. We all drew the car differently. Nextday, when we showed our pictures to eachother, we were very excited. But Anshulstarted laughing. He was looking atDheeraj's drawing of a car.

1

Anshul said — it looks like a small boxkept in a bigger one. Then Anshulshowed his drawing to Dheeraj.

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

Both of them drew the picture of the samecar. But the drawings look different.

Page 2: 1 Where to Look From - Prashanth Ellinancertbooks.prashanthellina.com/class_3.Mathematics.Mathematics/ch … · 1 Where to Look From Have you looked at things from different sides?

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A. A cat is peeping intoa classroom.Can you help her find outwhere the teacher is?

Staircase Staircase Table

Chair Pencil

C. Draw top views of a few things and ask your friends to guesswhat they are.

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

Bus

Practice TimePractice TimePractice TimePractice TimePractice Time

Page 3: 1 Where to Look From - Prashanth Ellinancertbooks.prashanthellina.com/class_3.Mathematics.Mathematics/ch … · 1 Where to Look From Have you looked at things from different sides?

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

RangoliRangoliRangoliRangoliRangoli

I am Meenakshi.I belong to Tamil Nadu. Wemake Kolam patterns everymorning. They are made byusing dots.

Have you ever madea rangoli?My friend Meenakshimakes beautiful floorpatterns.

Page 4: 1 Where to Look From - Prashanth Ellinancertbooks.prashanthellina.com/class_3.Mathematics.Mathematics/ch … · 1 Where to Look From Have you looked at things from different sides?

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Make Other Patterns YourselfMake Other Patterns YourselfMake Other Patterns YourselfMake Other Patterns YourselfMake Other Patterns Yourself1. Copy these shapes on the dot grid. Note that some lines in

the shapes are straight and some are not.

Page 5: 1 Where to Look From - Prashanth Ellinancertbooks.prashanthellina.com/class_3.Mathematics.Mathematics/ch … · 1 Where to Look From Have you looked at things from different sides?

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2. Use the dot grid given below to draw your own designs andshapes.

3. Complete these figures to make squares and rectangles.

Page 6: 1 Where to Look From - Prashanth Ellinancertbooks.prashanthellina.com/class_3.Mathematics.Mathematics/ch … · 1 Where to Look From Have you looked at things from different sides?

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4. 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 developchildren's understanding of shapes and symmetries. The chapter begins withactivities to show how 2-dimensional pictures can represent 3-dimensional objectsas seen from different perspectives. This is related to symmetries, an importantaspect of shapes further developed in Chapter 5.

Page 7: 1 Where to Look From - Prashanth Ellinancertbooks.prashanthellina.com/class_3.Mathematics.Mathematics/ch … · 1 Where to Look From Have you looked at things from different sides?

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Tit for TatTit for TatTit for TatTit for TatTit for Tat

After a while the painter showed her the picture.

One day Amina met a painter.

Amina gave him a hundred-rupee note.

Can youmakemy picture?

Yes, sure!I chargeRs 200for it.

Amina!How doyou likeit?

But this is onlyhalf !

The other half is exactlythe same. So just put amirror to get the completepicture.

Now can I havemy money?

But this isonly halfthe money !

The other half is exactly the same.So just put a mirror next to the noteto get the full money! Ha, ha!

Page 8: 1 Where to Look From - Prashanth Ellinancertbooks.prashanthellina.com/class_3.Mathematics.Mathematics/ch … · 1 Where to Look From Have you looked at things from different sides?

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

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

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

Page 9: 1 Where to Look From - Prashanth Ellinancertbooks.prashanthellina.com/class_3.Mathematics.Mathematics/ch … · 1 Where to Look From Have you looked at things from different sides?

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Give some more examples.

Mirror HalvesMirror HalvesMirror HalvesMirror HalvesMirror HalvesLook at the pictures given below. Does the dotted line divideeach picture into two similar mirror halves?

Page 10: 1 Where to Look From - Prashanth Ellinancertbooks.prashanthellina.com/class_3.Mathematics.Mathematics/ch … · 1 Where to Look From Have you looked at things from different sides?

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

Page 11: 1 Where to Look From - Prashanth Ellinancertbooks.prashanthellina.com/class_3.Mathematics.Mathematics/ch … · 1 Where to Look From Have you looked at things from different sides?

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Using such letters we can also make words which have similarhalves.

Can you guess these lettersfrom their halves?

Guess the wordsby lookingat their halves.

Page 12: 1 Where to Look From - Prashanth Ellinancertbooks.prashanthellina.com/class_3.Mathematics.Mathematics/ch … · 1 Where to Look From Have you looked at things from different sides?

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Making A MaskMaking A MaskMaking A MaskMaking A MaskMaking A Mask

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

11111

22222

33333

4444455555

Now, I can teach youhow to make the mask of a cat...

Take a pieceof paper.

Fold it alongthe middle.

Cut it outusing a pair ofscissors.On one side draw

the figure.

When youopen the fold,it looks likethis.

Colour it and tiea rubber bandon its back.

Your mask isready.