What money does — Economics, 11–13 years
Money makes exchange easier, gives prices a common unit and lets people keep purchasing power for later. It works because people trust that others will accept it.
One tool, three jobs
Money is a shared tool for moving value from one person to another. You can use it to pay, compare the prices of different things, or keep some value for later. Coins, notes and bank balances are useful only because other people agree to accept them.
Why not swap everything?
Before widely used money, people often had to swap one object or service directly for another. That is difficult when the other person does not want what you have, or when the two things are not worth exactly the same. Money solves this matching problem and makes many more exchanges possible.
A market day without money
Imagine Ana has six apples and wants a notebook. Ben has a notebook but wants bread, not apples. Carla has bread and wants apples. With direct swapping, Ana needs several steps and everyone must agree. If each item has a price in euros, Ana sells the apples, then uses the money to buy the notebook.
Money is not the same as wealth
It is reasonable to think that having more money always means having more wealth, because money can buy many things. But wealth also includes useful homes, tools, skills, health and natural resources. If prices rise or people lose trust in a currency, a pile of money may buy less without anything real having increased.
Why shops can sell online
Online shops rely on money as a common way to pay even when buyer and seller never meet. A price in euros lets someone compare a book, delivery and other costs from home. The payment system also records who gives value and who receives the product, making a distant exchange practical.
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