This mini-lesson introduces the foundations of OCR GCSE Economics: the basic economic problem and scarcity, choice and opportunity cost, the four factors of production, the production possibility frontier (PPF), and the three main economic groups — consumers, producers and government.
Work through each screen, answer the questions as you go (some are wordy, some are calculations like opportunity-cost ratios or % change) and collect ⭐ stars. Press Start when you're ready.
The basic economic problem is that resources are scarce (finite) while human wants are unlimited. Because we cannot have everything, we must choose — and every choice has a cost.
Example: if a government spends £1bn on a new hospital, the opportunity cost might be the schools it could have built instead. Opportunity cost is about the one best thing forgone, not everything forgone.
Economists group all resources used to make goods and services into four factors of production. Each earns a reward:
Watch out: in economics, capital means man-made aids to production (machines, factories), not money. Money is used to buy capital but is not itself a factor of production. Enterprise is the entrepreneur who takes the risk and combines the other three factors.
A production possibility frontier (PPF or PPC) shows the maximum combinations of two goods an economy can produce when its resources are fully and efficiently used.
Watch out: a point inside the curve means resources are being wasted (spare capacity). A point outside is impossible with current resources — only growth (an outward shift) could reach it.
Tap a resource, then tap the factor of production it belongs to. (Remember: land & labour are natural/human resources, capital is man-made, enterprise is risk-taking.)
Because resources are scarce, producing more of one good means less of another. On a PPF, the amount of the second good given up is the opportunity cost of the first.
If an economy can make a maximum of 50 buses OR 300 cars, then switching all resources from buses to cars gives 300 ÷ 50 = 6 cars for every bus given up. Each bus therefore has an opportunity cost of 6 cars.
Max output: 20 tractors OR 100 ploughs.
Opportunity cost of 1 tractor = 100 ÷ 20 = 5 ploughs.
OCR identifies three main economic groups, each making choices because resources are scarce:
Link it up: all three groups face the same basic economic problem. Every decision — a household's budget, a firm's output, a government's spending — involves scarcity, choice and opportunity cost.
Economic growth means an economy can produce more goods and services over time. On a PPF this is shown as an outward shift of the whole curve — points that were once unattainable become possible.
Growth comes from more resources (e.g. a bigger workforce or new land) or better resources (improved technology, education and skills, better capital equipment). Output can also be measured with percentage change:
Why it matters: higher output lets an economy satisfy more of society's unlimited wants. But scarcity never disappears — there are always more wants than resources, so choices and opportunity cost remain.
Tap a description on the left, then its matching term on the right.
Economic problem: scarce resources + unlimited wants → choice → opportunity cost (next best alternative forgone)
Main economic groups: consumers (maximise satisfaction) · producers (maximise profit) · government (uses tax revenue)
Factors of production: land (rent) · labour (wages) · capital (interest) · enterprise (profit)
PPF: on = efficient · inside = inefficient (spare capacity) · outside = unattainable · outward shift = economic growth
You've covered the foundations of OCR GCSE Economics — Introduction to Economics. Press Finish to see your score.
You've worked through Introduction to Economics for OCR GCSE Economics. 🎉
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Next: test yourself in the Evaluate stage Confidence Quiz, then lock it in with Verify.