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## ekShiksha : Privacy Setting

# 9. Boxes and Sketches

## Sweet Box

Ramya went to buy sweets. The shopkeeper took a paper cut-out and quickly made a lovely pink box for the sweets!

- Look at the photo and make your own box. Use the cut-out on page 201. How fast can you fold it?
- She made four more shapes. Each is to be folded along the dotted lines. You have to find out which of these can be made into a box.

## Shapes that Fold into a Cube

Buddha wants to make a paper cube using a squared sheet. He knows that all the faces of a cube are squares.

He draws two different shapes.

- Will both these shapes fold into a cube??
- Draw at least one more shape which can fold into a cube.
- What will be the area of each face of the cube?
- Draw one shape which will not fold into a cube.
- Look around and discuss which things around you look like a cube. List a few.

## Shapes for an Open Box

Remember the puzzles with five squares in chapter 3? You saw 12 different shapes made with five squares (page 46).

If you cut those shapes and fold them, some of those will fold into an open box (box without a top).

- Find out which of the other 8 shapes (on page 46) can be folded to make an open box.
- Draw more shapes which will not fold to make an open box.

## Boxes and Boxes

All boxes are not cubes. Here are some different kinds of boxes. Match the shape on the left with a box into which it will fold.

## Floor Maps

For making a house a floor map is first made. Have you ever seen a floor map? Here is a floor map of Vibha's house. It shows where the windows and the doors are in the house.

- Which is the front side of her house? How many windows are there on the front side?

From the floor map we cannot make out what her house really looks like or how high
the windows are. So we look for a special way of drawing the house which is deep - to show the length, width and height.

Here are four **deep drawings** of houses--

- Which one is Vibha's house?
- Why do the other three deep drawings not match the floor map? Discuss.

## A Deep Drawing of a Cube

Soumitro and his friends made deep drawings of a cube. These are their drawings.

- Which of the drawings look correct to you? Discuss.
- Can you add some lines to make drawing f ) into a deep drawing of the cube?

## Puzzle

## A Simple Way to Draw a Cube

Chanda wants to make a deep drawing of this cube. She draws the cube like this.

- In the same way make a deep drawing of a box which looks like this.

## Matchbox Play

Navin, Bhaskar and Pratigya made this bridge using matchboxes.

Navin and Pratigya made drawings of the bridge.

- If you look at the bridge from the top, how will it look? Choose the right drawing below:
- Look at the photo and try to make a deep drawing of this bridge.