Where to Look From Class 3 Notes Maths

Where to look from

Ramu and Shamu are playing together at the park.
They look at a car parked on the road. The view they see is from the side.
They decided to climb up a tree. They now see the same car but the car now looks different!
Why? It is because the views are different depending on where they are seen from.

Different types of views

• Side View:  When a person views an object from the side instead of front or back.
  
• Front View: When an object is viewed from the front by an observer.
  
• Back View:  When an object is viewed from the back by an observer.
  
• Top View: When an object is viewed from the top by an observer.
  
• Bottom View: When an object is viewed from the bottom by an observer.
  

Rangoli 

• Rangolis are made with colourful chalks or rice and give us  beautiful patterns.
  
• Free play with shapes on a dot grid can help children understand shapes and symmetries.
• We use rangoli patterns to find symmetry and reflection.
• It can be done by joining the dotted lines on the dot grid to find symmetry and the reflection of different figures.
• Some lines are straight on the dot grid while some are not.

Draw a kite and star on the given below dot grid.

Tit For Tat

• Amina tells the painter to make her picture. 
• The painter only draws half of it and says to put a  mirror to see the full picture. The mirror will show the exact same half.
• Amina as well only pays half the amount of what was asked by the painter and tells him to look at the note in front of a mirror, it will be exactly the same.
  

Why don't you try this for yourself? 

• Make half a picture of a square on a paper and put a mirror on the side to see the full image.
• See yourself in the mirror. You see your own reflection on the mirror.

Mirror Halves 

• Mirror ( or reflection ) symmetry divides a figure or design into halves that are mirror images. 
• Objects are the same on both sides of a line ( usually in the middle).

Here we are given halves of what appears to be the letter M,  and a pyramid.

We are required to make the other mirror half.

The full image will look like the following:

Look at the picture below. It is divided in two equal halves  with a dotted line in between.

• One part of an object has to be a mirror image of the other part.

Question for Chapter Notes: Where to Look From

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

• A.

  Yes
• B.

  No

Explanation

The way the dooted line cuts the triagle does not divide the picture into two similar mirror halves.

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Making A Mask

• I can show you how to create a cat mask. 
• First, get a piece of paper and fold it in half.
• Draw the cat's face on one side, and add eyes, nose, and other features. 
• Use scissors to cut it out.
• Now see the magic!! 

• Open the folded area and you will see the full cut out of the cat. 
• Add the features of the cat on the other half as well.
• Add some color and attach a rubber band to the back. Your mask is complete!