S.B.L. Series Story Based Learning SBL Series on Supply & Demand is to be used by teachers or volunteers to make young school children understand why certain things are expensive and other things cheap ,why prices keep changing with seasons and what factors affect these prices and how. Children take up the roles of the characters and read out their respective dialogues thus getting involved and learning while having fun.

1. Story Based Learning
S.B.L.
• S.B.L. Series 1
• Topic: Understanding basics of Supply & Demand
• Age Group : 9 Years to 14 Years
– (Classes 5th to 9th Standard)
• Aim:
– To make children understand why certain things are expensive and
other things cheap ,why prices keep changing with seasons and what
factors affect these prices and how.
– This is done through a story about two characters.
– Roles can be played by children themselves while they read out the
dialogues.
– A moderator would be required to make them understand the precise
definitions at the end when they are more comfortable with the event.

2. Flow of the S.B.L. Activity
• 2 Children take up the roles of the characters and read out
their respective dialogues
• A senior moderator narrates the scene and helps them
understand what is happening.
• At the end of the Story…
– The Definition Section(Terms they Understood with fun !)
• Supply
• Demand
• Buyer
• Seller
• Market
– Each scene is followed by a small flow chart through which the
moderator explains what is happening

3. Character Role
Play
START !
All
Kids
Understand
Concepts

4. The Story Of
SUPPLY

5. Story Characters
Mr. Margo Fruit Vendor
As BUYER As SELLER

6. Mr. Margo Fruit Vendor
SUPPLY
As SELLER
As BUYER Supply :
To sell
Demand: Mangoes :7kg
To buy Oranges:8kg
Mangoes :1-2kg Grapes :1 Crate
Oranges :6 -12 Bananas :6 Dozens
For myself and To customers
family

7. Mr. Margo
One fine day…………..

8. This Summer I Lets get ready and buy some
would eat even mangoes from the
more mangoes than “The Fruit Market”
the last one
Mr. Margo

9. The Fruit Market

10. Finally I have
reached my favorite
I cant stop myself place the Mango
picking up one market
!!!@!!!

11. My
Demand
1-2 kg of
Alphonso 6 to 12
Oranges
Mangoes

12. Supply
with me to sell to
customers .
Supply :
To sell
Mangoes :7kg
Oranges:8kg
Grapes :1 Crate
Bananas :6 Dozens
Small quantity of
other fruits
to customers

13. Special price for you
Sirji its Rs 110/kg,
How much for the
Alphonso mango
brother !!

14. Hey brother Rs 110/kg Sirji !,
is too much !!,I am a the stock has just
regular visitor, I know entered the market ,
the prices , I will buy the SUPPLY is less but
2kg ,so come down to the DEMAND is very
Rs 90/kg , if you want high !
to ….

15. Every summer the
Why are these same thing happens
mangoes so expensive
,whenever Alphonsos
???
I wanted to have lots
enter the market their
and lots of these price is sky high!!!
But Why????

16. SUPPLY  Less DEMAND High
=
HIGH PRICE !!
I got it !!
Since less mangoes are
avilable but mango eaters
are more … That is why
the alphonso mangoes are
so expensive
Rs110/kg

17. Sure Sirji!,here are
Ok Ok !! your mangoes!
Give me 1 kg
of mangoes Anything else for you
*-_-* Sirji! , buy some
Oranges or Grapes
,they are the nice
ones and good fresh
as well!!

18. How much are Very Fresh Sirji!!
these oranges ,they are the
for??, they Nagpur oranges,
don’t look Special price for you
that fresh Rs 25/dozen
Only

19. So now rates of
Great !! Oranges have Oranges have come
now come down to down !!!
Rs 25, it has been a But
month or so that they how and why ???
have come into the
market, last time I
bought them it was
Rs 40/dozen

20. SUPPLY  Enough DEMAND  Moderate
=
LOW PRICE !!
I got it !! Since there
is enough supply of
oranges available
and demand for them
is moderate ,the price
has come down !!

21. Don’t you worry Sirji!!
Give me Six ,You are my valued
oranges , but see to customer I will give
it that they are the YOU the best out of
best ones ,you best!!
know I am a And keep visiting for
regular buyer, I Fresh and Nice Fruits !!!
know about the
quality!!

22. So I had great day !!!
I guess I can predict that
Shoping my favourite
after a fortnight
Fruit
The Mangoes!!! The alphonsos will come
And learnt so much down to a price
about price rise and fall Like
!! Rs 60-Rs70 /kg
Lets see what happens

23. What What
happened to happened to
the demand ? the supply ?
My
DEMAND for Supply of
mangoes fruits with me
and Oranges was sold to
was fulfilled Mr.Margo my
!! customer

25. The Fruit Market
10-12 days later…………..

26. The Fruit Market

27. How are you Sirji!!
Come come !!
I have lots of fresh I am fine and fruit
fruits today!! hungary so how are
the mangoes these
days ??

28. Just arrived !!
Very fresh Alphonsos!
Only Rs 70/kg Ha Ha Ha !!!!!
How many So I was right ……
kgs shall I pack for you Pack a Kg for me
Sirji!! brother

29. Exactly as I thought the
prices have come down
now for the mangoes ,
and this time
I know why !!

30. SUPPLY  Good Enough DEMAND Good
=
LOW PRICE !!
I got it !! Since there Now The
is enough supply of Oranges
Alphonso Mangoes
available and
demand for them is
good ,the price has
come down
Comparitively !!

31. Sir your
mangoes are ready
Would you like Oranges
as well !!
No thanks This time
They are very cheap
just want to relish the
now
Mangoes ..
Rs 15 /dozen only, there
is ample supply of
ORANGES !!

32. SUPPLY  Good DEMAND Less
=
VERY LOW PRICE !!
I got it !! Since there
is enough supply of
oranges available but
demand for them has
fallen ,the price has
come down
Heavily !!

33. Yes I Got It All!!
SUPPLY

34. But there is more
…Please move
ahead

36. Supply and Demand
The terms supply and demand
refer to the behaviour of
people......as they interact
with one another in markets.
markets.

37. What is Supply?
• Quantity Supplied refers to
the amount (quantity) of a
good that sellers are willing
to make available for sale at
alternative prices for a
given period.

38. What is Demand
• Quantity Demanded refers to
the amount (quantity) of a
good that buyers are willing
to purchase at alternative
prices for a given period.

39. What is Market
• A market is a group of buyers
and sellers of a particular
good or service.

40. For example when you buy fruits
from a fruit vendor
 Buyer :You are the buyer/
Mr.Margo
 Seller : The fruit vendor
 Market: Both form the
Market
Mr. Margo Fruit Vendor
As BUYER As SELLER

41. What is Buyer’s role?
Mr. Margo As BUYER
• Buyers determine demand..
 If there are more no of people
wanting to buy a particular
fruit then the Deamand for
that fruit is high
 In contrast if less no of
people want to buy that fruit
then the demand of that fruit
falls

42. Who are the Sellers
Fruit Vendor As SELLER
• Sellers are the
people who get the
supply delivered to
the buyers or the
consumers

43. What is the role of sellers?
• Sellers determine supply…
 Depending upon the demand the
sellers determine the supply if they
see that more no. of people are willing
to buy that fruit then they increase the
supply
 In contrast if there is less demand for
that fruit then they cut down the
supply
 Supply may also vary due to seasonal
availability of a particular fruit.

44. Above discussion
about
“Demand & Supply”
was just in relation to the story
we had ,infact buyer-seller,
relationship exists everywhere.
“Supply and Demand cycle”
is apart of each and every
market , industry & organisation
it woulb be clear with the
following examples!

45. Some examples for better
understanding!!
Example ` 1 2 3
Buyer Student Housewife Engineer
Demand Notebooks Tomato, potato Resisters ,capacitors
There can
Seller Stationary Vegetable Vendor Electronic parts
shopkeepers retailer
be many
more
Supply Note Books
etc
All Types of
Vegetables
Resisters , capacitors,
LEDs , batteries etc
examples !

46. I hope ,now you are clear with the idea of
“Supply & Demand”
All the best!!!!