After the 3 little pigs managed to

run from the big bad wolf, they

lived happily ever after.

A few years later, their cousins

– Piga, Pige and Pigo, also

decided to move out.

PigaMy two eldest cousins built

their houses with straws

and sticks. I am smarter! I

shall make a house made

of wood!

Piga searched for the finest wood

in the forest and constructed a

house made of wood.

PigeGlass seems more

beautiful than wood. I shall

build a house made of

glass!

Pige bought the clearest glass he

could find and started building his

glass house.

PigoI shall not copy my

brothers. I am going to

build my house with metal!

Pigo found some metals and

began constructing his house.

One bright sunny afternoon, after

building the houses, the three

brothers decided to take a rest in

their respective new houses.

Piga rested

happily in his

new house.

Oh! It is so sunny!

How can I sleep?

It is so hot in the house!

A tsunami struck the area where

Piga, Pige and Pigo lived.

After a week, something bad

happened.

Although there was a

flood, Piga’s house

remained afloat.

Things were not as fortunate for Pige and

Pigo. Their houses sank and they had to

be rescued.

Not only did Pige’s glass house

sank, it was broken by debris.

The water subsided after a few days.

Piga and Pigo had to spend time and money

repairing their houses.

As for Pige, his glass house was broken into

pieces. He had to get a new house or move in

with one of his brothers.

If you were Pige, what would you use to

construct your house?

Why?

Can a house be made only of one material?

Let’s study the houses constructed

by Piga, Pige and Pigo.

Piga’s House

Piga does not feel hot in his house on a

sunny afternoon.

Why is that so?

Reason: Wood is a bad conductor of heat.

Material used: Wood

Piga’s House

Piga’s house floats on water.

Why?

His house is made of wood.

Wood floats on water.

Material used: Wood

Piga’s House

Piga’s house does not break into pieces

easily.

Why is that so?

Reason: The house is made of hardwood.

As compared to softwood, hardwood is

hard and strong.

Material used: Wood

Pige’s House

Piga finds it sunny to remain indoors on

afternoons.

Why is that so?

His house is made of glass.

Reason: Glass is transparent. It means

that you can see through glass.

Material used: Glass

Pige’s House

Piga’s house sinks in water.

Why?

His house is made of glass.

Glass sinks in water.

Material used: Glass

Pige’s House

Piga’s house breaks into pieces when hit.

Why?

His house is made of glass.

Glass breaks easily.

Glass is not as strong as wood or metal.

Material used: Glass

Pigo’s House

Piga feels hot in his house.

Why?

His house is made of metal.

Reason: Metal is a conductor of heat

That means that metal absorbs heat

easily.

Material used: Metal

Pigo’s House

Piga’s house sinks in water.

Why?

His house is made of metal.

Reason: Metal sinks in water.

Material used: Metal

Pigo’s House

Pigo’s house does not break easily.

Why?

His house is made of metal.

Reason: Most metals are strong.

Material used: Metal

At a glance,

Wood Glass Metal

Is it a good

conductor of

heat?

No No Yes

Is it

transparent?

No Yes No

Does it float

or sink in

water?

Floats Sinks Sinks

Is it hard? Hardwood –

Yes

Softwood - No

No Yes

Put on your thinking cap

On a hot afternoon, which bench will

you sit on?

If you were Pige, what materials would you

use to construct a house?

Can a house be made only of one material?