Key Stage 3 citizenship · Financial capability

KS3 citizenship: what money is and what it is used for

In Key Stage 3 citizenship, pupils learn about the functions and uses of money as the first part of financial capability. They look at why societies use money instead of swapping goods, what money does, the different forms it takes, and how people earn, spend, save and give. The wider aim is for young people to manage their money day to day, plan for future needs, and think critically and debate questions about money and society.

The functions and uses of money, explained

Money is anything that people generally accept in exchange for goods and services. To see why that matters, pupils imagine a world without it. Under barter, you can trade only if the other person happens to want what you have to offer at the same moment, which economists call a double coincidence of wants. A baker who wants a bike might find that the bike seller does not want bread. Money solves this: bread can be sold to anyone, and the money used to buy the bike from anyone.

Teachers usually describe three functions of money. It is a medium of exchange, which means it is accepted in payment. It is a measure of value, since prices let us compare very different things, such as a bike and a loaf of bread, in the same units. And it is a store of value, because it can be saved and spent later. Money only works when people trust it, which is one reason governments and central banks take such care of the currency, the pounds and pence used in the UK.

Pupils also look at the forms money takes. Coins and notes are cash, but most money in the UK is now held and moved digitally, as figures in bank accounts, paid by card, contactless, phone or transfer. A debit card spends your own money straight from your account, whereas a credit card is a form of borrowing that has to be paid back, with interest if it is not cleared in full. Understanding the difference matters long before pupils get their own cards.

The uses of money are explored through choices. People get money from earnings, gifts, benefits, pocket money and interest, and they can spend it, save it, give it away, invest it or borrow against future income. Every choice involves an opportunity cost: money spent on one thing cannot be spent on another. Savings can earn interest, while borrowing costs interest. Pupils meet inflation, a general rise in prices, which means the same money buys less over time, and exchange rates, which show how many units of one currency buy another.

In class this is mostly discussion and scenario work: sorting needs and wants, comparing ways to pay, role-playing a barter market or looking at how prices change. Pupils also debate real questions, such as whether a society needs cash, or how taxes should be spent. This topic sets the groundwork for budgeting and managing risk, and for the Key Stage 4 topics on income and spending, credit and debt, savings, insurance and public money.

Words your child will hear

Currency: The money used in a country, such as the pound sterling in the UK.
Barter: Swapping goods or services directly, without using money.
Income: Money received, such as wages, benefits, pocket money or interest.
Interest: A payment for borrowing money, or a reward for saving it, shown as a percentage.
Inflation: A general rise in prices over time, so that each pound buys less.
Exchange rate: The value of one currency measured in another, such as how many euros you get for £1.
Opportunity cost: What you give up when you choose one option over another.

What the National Curriculum says

The programme of study for Key Stage 3 says:

Pupils should be taught about the functions and uses of money, the importance and practice of budgeting, and managing risk
Aim: pupils are equipped with the skills to think critically and debate political questions, to enable them to manage their money on a day-to-day basis, and plan for future financial needs.

Objectives from the National Curriculum in England, © Crown copyright, used under the Open Government Licence v3.0.

Try it: explaining why we use money

Explain why a society uses money instead of barter, and give one limit on money as a store of value.

Describe the problem with barter. Sam is a baker who wants a bike. The bike seller doesn’t want bread. Sam must find someone with a bike who wants bread, or trade through several people, which takes time.
Show money as a medium of exchange. Sam sells bread to anyone for money, then uses the money to buy the bike from the seller. Nobody has to want the same things at the same moment.
Show money as a measure of value. If a loaf costs £2 and the bike costs £120, the bike is worth 60 loaves. Prices let us compare different goods using one unit.
Show money as a store of value. Bread goes stale, but money can be saved: £10 a week for 12 weeks pays for the bike. The limit is inflation. If a £2.00 loaf rises to £2.10, prices have gone up by 10p out of £2, which is 5%, so savings kept as plain cash buy a little less.

Money makes trade easier because it is accepted by everyone (medium of exchange), lets us compare prices (measure of value) and can be saved for later (store of value). Its limit as a store of value is that inflation reduces what a given amount can buy, so saving needs to consider interest as well.

Common mistakes and how to help

“Money means coins and notes”

Children see cash being handed over and so think of it as the only real money, while card payments seem like something else.

What helps: Follow a card payment: the figure in your account goes down, the shop’s goes up. Most money today is a record in a bank account.

“A credit card is extra money”

Paying with a card feels the same whichever type it is, and no money visibly leaves a purse.

What helps: Say it plainly: a debit card spends your money, a credit card borrows someone else’s and the bill arrives later. Ask what happens if the bill is not paid in full.

“Price and value are the same thing”

In everyday language, a high price suggests high quality and a low price suggests little worth.

What helps: Compare a cheap item that breaks in a week with a dearer one that lasts years, or a free hour with a friend. Ask which has more value to you, and why.

“Keeping cash at home is the safest way to save”

Cash feels solid and under your own control, while bank accounts can seem abstract.

What helps: Discuss the downsides: it can be lost or stolen, earns no interest and loses buying power if prices rise. Savings in UK banks and building societies are protected by a government-backed scheme, up to a limit.

How to help at home

Talk through prices on the weekly shop. Compare the price per kilogram or per 100 grams of two products. Ask which gives the best value for money, and whether the cheapest is always the best choice.
Trade without money for a day. Play a barter game with chores or swapped items. The difficulty of finding a fair swap makes the point about money more strongly than any explanation.
Look at a bank statement together. Show your teenager how payments, receipts and balances appear, and which are cash and which are digital. Keep it to what suits your family’s privacy.
Track the price of something over time. Pick a snack or bus fare. Ask how much it cost when you were young, or note the price now and again in a few months. Work out the percentage change.
Explore exchange rates before a trip. If you travel abroad or buy something priced in another currency, work out what it costs in pounds and how the rate would affect the price.

Leads on to

Key Stage 4: Income and expenditure
Key Stage 4: Credit and debt
Key Stage 4: How insurance works
Key Stage 4: Savings, pensions and accounts
Key Stage 4: How public money is raised and spent