Jugami › Economics and Personal Finance
High school · Grades 9–12
Economics and Personal Finance
Every price is a message.
Economics is the study of how people make choices when they can't have everything. Why does a concert sell out in minutes? Why does a drought far away change what you pay for lunch? What should you do with your first paycheck?
These lessons build the toolkit one idea at a time, with graphs you can move, practice games and quizzes. We start with the most useful model in the subject: supply and demand.
Lessons
One lesson is ready now. The rest are on the way.
- Lesson 1 · Ready
Supply and Demand
The laws of demand and supply, shifts versus slides, equilibrium, shortages and surpluses, price ceilings and floors, and a first look at elasticity, with real cases from rent control to the minimum wage.
Market lab · Shift-or-slide game · Quiz - Coming soon
Elasticity in Depth
Price, income and cross-price elasticity, total revenue, and who really pays a tax.
- Coming soon
Market Structures
Competition, monopoly, oligopoly, and why some markets have many sellers and others have one.
- Coming soon
GDP, Inflation and Unemployment
How we measure a whole economy, and what the headline numbers mean.
- Coming soon
Money, Banks and the Fed
What money is, how banks create it, and what the Federal Reserve does.
- Coming soon
Personal Finance: Budgeting and Saving
Paychecks, budgets, emergency funds and the power of compound interest.
- Coming soon
Personal Finance: Credit and Loans
Credit scores, interest rates, student loans and how to read the fine print.
Four big ideas you'll keep using
- Scarcity
- There's never enough time, money or stuff for everything everyone wants, so we have to choose.
- Opportunity cost
- The real cost of a choice is the next-best thing you give up. An hour at a job might cost you an hour of studying.
- Incentives
- People respond to rewards and costs. Change the price of something and behavior changes too.
- Tradeoffs
- Most policies help some people and cost others. Good economics names both sides before judging.
“It is not from the benevolence of the butcher, the brewer, or the baker that we expect our dinner, but from their regard to their own interest.”
Smith's point was that trade lets strangers help each other without being friends: the baker earns a living by making bread you want to buy. Markets aren't the answer to every problem, and economists disagree about where government should step in, but you can't join that debate without first understanding how markets work.
Interactive tools
| Tool | What you do | Lesson |
|---|---|---|
| Market lab | Shift demand and supply, change how price-sensitive buyers are, and add a price ceiling or floor | Supply and Demand |
| Shift or slide? | Read news flashes and decide which curve moves | Supply and Demand |
| Quiz | Nine questions with explanations | Supply and Demand |
About this course
- Who it's for: high school students in grades 9–12, and anyone who wants a clear start in economics.
- Education, not advice: these lessons teach ideas and evidence. They aren't financial, legal or investment advice.
- Balanced: when a topic is debated, like rent control or the minimum wage, we show what the evidence says on each side and let you weigh it.
- Private: no ads and no trackers. Quiz scores and game streaks are saved only in your own browser.
Sources
- Adam Smith, The Wealth of Nations (1776), Book I, Chapter II, via Project Gutenberg (public domain).
- OpenStax, Principles of Economics 3e, a free, peer-reviewed textbook used for definitions throughout the course.
Credits: all drawings are original art made in code for Jugami (SVG on the page; the share image is the same art rendered to JPG).