Module 1: Money & Prices
What money is, why prices change, and what interest rates actually do.
1. What is Money?(3 min)
Analogy: Imagine trying to trade a pizza slice for a haircut. Awkward, right? Money is the middle-man that makes trades easy.
Money is anything a lot of people agree to accept in exchange for stuff. Long ago it was salt, cows, shells or gold. Today it is mostly numbers in a bank app.
Money does three jobs: it lets you trade (pay for a game), it stores value (save it for later), and it measures value (this shirt costs $20).
Because everyone trusts the same money, you can walk into any shop and know exactly what a bar of chocolate costs. Without money, we would have to swap physical things every single time.
- Big idea: Money is a shared way to trade.
- Big idea: Money only works because we all trust it.
- Big idea: Modern money is mostly digital numbers.
- Currency:
- The type of money a country uses (dollars, euros, yen).
- Central bank:
- The government-linked bank that controls a country’s money.
2. Why Prices Go Up: Inflation(4 min)
Analogy: A pizza slice that cost £2 when you were in Year 7 might cost £3 by the time you finish school. That climb is inflation.
Inflation means prices going up over time. If inflation is 3% a year, something that costs £100 today will cost about £103 next year.
Inflation happens when there is more demand for stuff than supply, or when the government prints too much money, or when things like oil get more expensive.
A little bit of inflation (about 2%) is normal. A lot of inflation — like 20% or more — is a big problem because your savings buy less every month.
- Big idea: Inflation is prices rising over time.
- Big idea: A small amount is normal; a lot is dangerous.
- Big idea: Inflation quietly eats the value of savings.
- CPI:
- Consumer Price Index — a basket of things people buy, tracked over time to measure inflation.
- Deflation:
- The opposite of inflation — prices falling. Sounds nice but can freeze the economy.
3. The Cost of Borrowing: Interest Rates(4 min)
Analogy: If a friend lends you £10 and asks for £11 back next week, that extra £1 is interest — the price of borrowing.
When banks lend money, they charge extra on top. That extra is called interest, and how much extra is the interest rate.
A country’s central bank (like the Federal Reserve in the US or the Bank of England in the UK) sets a main interest rate. Everyone else copies it: mortgages, savings accounts, business loans.
When inflation is too high, central banks raise interest rates. This makes borrowing more expensive, so people spend less, so prices stop racing up. When the economy is weak, they cut rates to encourage spending.
- Big idea: Interest is the price of borrowing money.
- Big idea: Central banks use rates to control inflation.
- Big idea: Higher rates cool the economy; lower rates heat it up.
- Federal Funds Rate:
- The main US interest rate set by the Federal Reserve.
- Real rate:
- The interest rate after subtracting inflation. It tells you if you’re truly earning or losing.
4. Currencies & Exchange Rates(4 min)
Analogy: Going on holiday abroad? Your money has to be swapped for the local money first. The swap rate is called the exchange rate.
Different countries use different money. £1 might buy $1.25 today and $1.30 tomorrow. That changing swap rate is the exchange rate.
Exchange rates move because of trade, interest rates, politics and how much investors trust a country. A strong currency buys more of others.
When a currency gets weaker, foreign holidays and imported gadgets get more expensive at home. When it gets stronger, they get cheaper.
- Big idea: Exchange rates are the price of one money in another.
- Big idea: Rates change all the time based on trust and interest rates.
- Big idea: A stronger currency = cheaper imports and holidays.
- FX:
- Short for "foreign exchange" — the market where currencies are swapped.
- Reserve currency:
- A currency (like the US dollar) that many countries hold in their savings.
Module 2: The Economy
How we measure a country: jobs, growth, debt and fairness.
5. GDP: How Big Is a Country’s Economy?(4 min)
Analogy: Imagine every lemonade stand, barber shop, factory and Netflix subscription in your country added together in one year. That total is GDP.
GDP stands for Gross Domestic Product. It is the total value of all the goods and services a country produces in a year.
A bigger GDP does not always mean people are richer. If a country has a huge population, you divide GDP by the number of people to get GDP per person. That is a better measure of how the average person lives.
GDP grows when the economy is doing well and shrinks in a recession. Fast growth like 6-8% is common for developing countries; rich countries usually grow 1-3% a year.
- Big idea: GDP measures a country’s total output.
- Big idea: GDP per person shows how rich the average person is.
- Big idea: Growth means the economy is expanding.
- Recession:
- When GDP shrinks for two three-month periods in a row.
- Nominal vs real:
- Nominal GDP counts today’s prices; real GDP strips out inflation for a fair comparison.
6. Jobs & Unemployment(3 min)
Analogy: If every adult in your school year could either have a job or be looking for one, unemployment is the share who are looking but haven’t found one yet.
The unemployment rate is the percentage of people who want a job but do not have one. A low rate (about 3-5%) is healthy; above 8% is a warning sign.
Not everyone counts. Kids in school, retirees and stay-at-home parents who are not looking for work are outside the "labour force". Only those actively looking count as unemployed.
Youth unemployment is often higher than the general rate because young people are new to the workforce and get hit hardest by economic downturns.
- Big idea: Unemployment counts people who want but lack a job.
- Big idea: A low rate is healthy; a high rate signals trouble.
- Big idea: Young people usually face higher unemployment.
- Labour force:
- People who have a job OR are actively looking for one.
- Participation rate:
- The share of working-age people in the labour force.
7. Government Debt(4 min)
Analogy: You promise to pay your friend back £5 next week for a snack. Governments do the same — but with billions, and for decades.
Governments spend more than they collect in taxes almost every year. To cover the gap they borrow money by selling "bonds" (a fancy IOU) to investors.
The total amount owed is the national debt. We compare it to GDP to see if it is a lot: 60% of GDP is normal, above 100% is worrying, above 200% is extraordinary (Japan sits around 250%).
Debt is not automatically bad. If it pays for schools, roads and hospitals, it can help the economy grow. If it just covers day-to-day spending forever, it becomes risky.
- Big idea: Governments borrow by selling bonds.
- Big idea: Debt-to-GDP shows how heavy the debt really is.
- Big idea: Borrowing to invest is different from borrowing to survive.
- Bond:
- An IOU sold by a government or company, paid back with interest.
- Default:
- When a government cannot pay its debt back on time. Very rare for big rich countries.
8. Rich vs Poor: Development & Inequality(4 min)
Analogy: If two friends share £100 and one takes £90, that’s huge inequality. Countries have the same issue on a much bigger scale.
Some countries are much richer than others. We measure development with a few numbers: GDP per person, life expectancy, and how many people have gone to school.
Inequality is about how evenly wealth is spread inside a country. Even a rich country can have big inequality if a tiny group holds most of the money.
One popular measure is the Gini coefficient (0 = perfectly equal, 100 = one person owns everything). Nordic countries score around 25; deeply unequal countries score above 50.
- Big idea: Development combines income, health and education.
- Big idea: Inequality is about how wealth is shared.
- Big idea: Two countries with the same GDP can feel very different to live in.
- HDI:
- Human Development Index — combines income, life expectancy and education into one score.
- Gini:
- A 0-to-100 number showing how unequal a country is.
Module 3: Countries Together
Trade, people moving around, and the "soft power" of culture.
9. Trade Between Countries(4 min)
Analogy: You have loads of chocolate; your friend has loads of crisps. You swap. Everyone gets both. That’s trade.
Countries trade because no country makes everything well. Japan makes great cars, Brazil grows lots of coffee, Saudi Arabia has oil. Everyone benefits by swapping.
Exports are things sold to other countries. Imports are things bought from other countries. The difference is the "trade balance".
Sometimes countries add extra fees called tariffs on imports. This makes foreign goods more expensive, protecting local businesses but making things costlier for shoppers.
- Big idea: Trade lets each country focus on what it does best.
- Big idea: Exports go out, imports come in.
- Big idea: Tariffs make imports pricier and can start trade wars.
- Tariff:
- A tax a government adds to imported goods.
- Free trade:
- When two countries agree not to add tariffs between them.
10. People on the Move: Migration(3 min)
Analogy: You might move from one town to another for a new school. Millions of people move between countries every year, for the same kinds of reasons: work, safety, family.
Migration is people moving from one country to another to live. Some come for jobs, some to study, some to escape war (they are called refugees).
Countries that welcome migrants often get younger workers, new cultures and new businesses. But it can also strain housing, schools and healthcare if not planned well.
When migrants send money back home to their families it is called a "remittance". For many countries this is a bigger money flow than any single industry.
- Big idea: People move for work, safety, family and study.
- Big idea: Migration can grow the economy but needs planning.
- Big idea: Remittances are money migrants send home — often huge.
- Refugee:
- Someone forced to leave their country because of war or persecution.
- Remittance:
- Money migrants send home to family.
11. Culture, Passports & Soft Power(3 min)
Analogy: Think about how many countries you can name from their music, movies or football teams. That influence is called soft power.
Soft power is a country’s ability to shape the world through culture, ideas and diplomacy — not through armies or money.
K-pop, Hollywood films, French cooking, Nigerian Afrobeats, British Premier League football — these all give their countries a global voice.
Passport strength is another quiet form of power. A strong passport (like Japan’s or Germany’s) lets you visit 190+ countries without a visa. A weak one may allow only 30-40.
- Big idea: Soft power comes from culture and ideas.
- Big idea: Music, film, sport and food shape how the world sees a country.
- Big idea: Passport strength quietly reflects a country’s standing.
- Soft power:
- Influence through culture and ideas, not force.
- Visa:
- Official permission to enter another country.
Module 4: Big Global Themes
Climate, defense, natural resources and the AI boom.
12. The Planet’s Weather: Climate & Emissions(4 min)
Analogy: Leave a car engine running in a closed garage — the air gets thick and hot. Earth’s atmosphere works a bit like that when we release too many greenhouse gases.
Burning coal, oil and gas releases carbon dioxide (CO₂). This gas traps heat in the atmosphere — the "greenhouse effect" — and slowly warms the planet.
Some countries release far more CO₂ than others. China and the US emit the most in total; countries like Qatar and Australia emit the most per person.
The world agreed in Paris (2015) to try to keep warming below 1.5°C. That means switching to clean energy — solar, wind, nuclear, batteries.
- Big idea: CO₂ traps heat and warms the planet.
- Big idea: Big emitters differ if you measure by country or per person.
- Big idea: Clean energy is the main tool to slow warming.
- Greenhouse gas:
- Gas that traps heat in the atmosphere (mainly CO₂ and methane).
- Net zero:
- Balancing every tonne of CO₂ released with a tonne removed.
13. Who Spends on Defense?(3 min)
Analogy: Some countries spend a big chunk of their budget on the army — a bit like a family spending most of its money on the biggest lock in the neighbourhood.
Defense spending is the money a government spends on its military — soldiers, ships, planes, missiles.
The US spends by far the most in absolute terms (around $900bn a year). But smaller countries surrounded by threats, like Israel or Ukraine, spend a much larger share of their economy.
NATO members promise to spend at least 2% of GDP on defense. That target used to be missed by many; since the Ukraine war most now meet it.
- Big idea: Defense spending funds militaries.
- Big idea: Absolute size and % of GDP tell different stories.
- Big idea: NATO’s 2% target is a widely watched benchmark.
- NATO:
- Military alliance of 32 countries in Europe and North America.
- Arms race:
- When countries race to build more weapons than their rivals.
14. Oil, Metals & the Stuff We Use(3 min)
Analogy: Everything you use — your phone, the bus you take, the electricity in your house — needed raw materials pulled out of the ground somewhere in the world.
Some countries got lucky with natural resources: oil in Saudi Arabia, lithium in Chile, copper in Zambia, cobalt in the Democratic Republic of Congo.
These raw materials matter because modern tech needs them. Every electric car battery, every laptop, every wind turbine uses metals from a small handful of countries.
When one country controls most of a critical resource, it holds serious power. That is why "resource security" is now a topic that shows up in the news alongside AI and defense.
- Big idea: Raw materials come from a few key countries.
- Big idea: Modern tech depends on specific metals.
- Big idea: Resource control = geopolitical power.
- Critical mineral:
- A metal or element that a country decides is vital for its economy or security.
- OPEC:
- A group of big oil-producing countries that coordinate how much oil to pump.
15. The AI Boom(3 min)
Analogy: Imagine having a super-smart study buddy that answers any question, writes essays with you and remembers everything. That’s what modern AI tools try to be.
Artificial intelligence (AI) is software that can learn patterns from huge amounts of data. Modern AI models like ChatGPT, Claude and Gemini can chat, write code and analyse images.
Training the biggest AI models is really expensive — billions of dollars and thousands of specialised chips. Only a few companies (mostly in the US and China) can afford it.
AI is already changing school, work and the economy. New laws are trying to keep it safe: the EU AI Act, US executive orders, and safety institutes in the UK and US.
- Big idea: AI learns patterns from massive data.
- Big idea: Training the biggest models costs billions.
- Big idea: Governments are writing new rules to keep AI safe.
- LLM:
- Large Language Model — an AI trained on tons of text to chat and write.
- GPU:
- A powerful chip originally made for gaming, now used to train AI.