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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?
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