Money and prices — Economics, 7–10 years
Money gives people a common way to pay, compare what things cost and receive payment for work.
What money does
Money is something people agree to accept when they buy and sell. It lets a shop label an item with a price, lets a customer pay without finding someone who wants an exact swap, and gives people a way to keep value for later. Coins, notes and digital balances can all serve this job.
Why people use money
Direct swapping is awkward: a baker who wants shoes must find a shoemaker who wants bread at the same time. Money solves this matching problem and makes prices easier to compare. Societies developed different forms of money, from objects people trusted to coins, notes and today’s electronic payments.
Checking the change
A notebook costs €3.70. Sara pays with a €5 note. First, count up from €3.70 to €4.00: that is €0.30. Then count from €4.00 to €5.00: that is €1.00. Add them: €0.30 + €1.00 = €1.30, so the correct change is €1.30.
The bigger number is not always the better deal
People often see €4 and €6 and assume the €6 item is better because its number is larger. That is reasonable when “more” sounds like “more useful”, but price only tells how much money is requested. Compare the item, its quality and how much you need before deciding whether a higher price is worthwhile.
Buying and comparing
At a market, money lets you compare a €2 apple with a €3 sandwich, even though they are different things. A price can help you decide what fits your money and what seems worth it, but it is not a complete measure of quality or importance. The same habit helps when comparing books, tickets or services.
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