Economics, finally made simple
Master supply & demand, elasticity, GDP, inflation and more through interactive graphs, real-world examples, and equations you can actually understand. Built for curious students.
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Real-world examples
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Quiz questions
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Glossary terms
Interactive Graphs
Drag sliders, shift curves, and watch equilibrium change in real time.
Live Equations
Beautifully rendered formulas with step-by-step calculators.
Real-Life Examples
From coffee prices to Zimbabwe hyperinflation — economics in the wild.
Student-Friendly
Clear, jargon-free explanations that actually make sense.
Jump to any topic
11 topics, each with interactive graphs, equations, and real examples.
Did you know?
Compound InterestIf you invested $1,000 in the S&P 500 in 1980 and left it alone, it would be worth over $40,000 today — thanks to compound interest.
Class Notes — Chapter Wise
Structured full-length notes aligned to your syllabus. Pick your level below to open the complete notes page — every chapter includes charts, equations, illustrations, and worked problems.
Class 11
NEB · 18 units · 100 marks
NEB Class 11 Economics — 18 units covering basic concepts, microeconomics, macroeconomics, development economics, the Nepalese economy, and quantitative tools. Full chapter-wise notes with charts, equations, illustrations, and worked problems.
Class 12
NEB · 14 chapters · 80 marks
NEB Class 12 Economics — microeconomics, market structures, cost & revenue, factor pricing, money & banking, government finance, international trade, poverty & inequality, development planning, SDGs, and statistics. Full chapter notes with diagrams and problems.
BBS
TU · 1st Year · MGT 201
Bachelor of Business Studies (BBS) 1st-year Economics — microeconomics foundations including consumer behaviour, market structures (perfect competition, monopoly, monopolistic competition, oligopoly), factor pricing, and welfare economics.
BBS 2nd Year
TU · 2nd Year · MGT 206 · 150 LH
Bachelor of Business Studies (BBS) 2nd-year Macroeconomics (MGT 206) — 10 units covering introduction to macroeconomics, national income accounting, classical theory of employment, Keynesian macroeconomics, IS-LM model, inflation, business cycles, monetary theory & policy, government finance & fiscal policy, and contemporary issues in Nepal. Aligned to the TU syllabus (150 lecture hours, 100 marks).
MA Economics
TU · Postgraduate
Master of Arts in Economics — advanced microeconomic theory, macroeconomic theory, mathematical economics, econometrics, development economics, and Nepalese economy. Notes coming soon — share your syllabus to get them added.
Syllabus overview & topic browser
Class 11 Economics (NEB syllabus) — 18 units covering basic concepts, microeconomics, macroeconomics, development economics, the Nepalese economy, and quantitative tools. Each unit shows its marks weight and expected question types.
18
Units
58
Topics
119
Marks
0
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Supply & Demand
The foundation of all market economics. Prices emerge from the interaction between buyers and sellers.
No shift
No shift
Equilibrium
How it works:
supply
demand
The Law of Demand
Consumers buy less when prices are high and more when prices are low. This inverse relationship gives its downward-sloping curve.
Demand function
As price rises, quantity demanded falls (and vice versa) — assuming everything else stays the same.
The Law of Supply
Producers offer more for sale at higher prices because greater revenue covers higher production costs and yields more profit.
Supply function
Higher prices give producers incentive to produce more, so supply slopes upward.
Market Equilibrium
is the price where quantity supplied equals quantity demanded. Above it, builds and prices fall. Below it, drives prices up.
Equilibrium price
At equilibrium, there's no shortage and no surplus — the market 'clears'.
Real-Life Examples
Coffee Price Surge
Real-world caseIn 2021, a severe frost in Brazil (the world's largest coffee producer) destroyed coffee crops. This reduced the of coffee beans, shifting the curve left. With unchanged, the price of coffee rose globally.
Takeaway: A leftward shift → higher price, lower quantity
Hand Sanitizer Boom
Real-world caseWhen COVID-19 hit in 2020, for hand sanitizer skyrocketed overnight. The curve shifted far right while couldn't keep up, causing prices to spike and shortages everywhere.
Takeaway: A rightward shift → higher price, higher quantity
Ride-Share Surge Pricing
Real-world caseUber and Lyft use surge pricing during rush hour or rain. When for rides spikes (right shift) with fixed driver , prices rise until more drivers join or falls.
Takeaway: Dynamic — prices adjust to balance &
Avocado Toast Craze
Real-world caseOver the 2010s, rising popularity of avocados ( shift right) combined with expanded farming ( shift right) led to much higher quantities sold, with prices rising moderately.
Takeaway: When both curves shift right, quantity definitely rises; price depends on relative shifts
Related topics
Price Elasticity of Demand
How sensitive are consumers to price changes? measures exactly that — and it determines whether raising prices helps or hurts revenue.
Midpoint Formula:
Quantity barely responds to price. A price increase raises total revenue.
Total Revenue Impact
✓ Inelastic demand: higher price → higher revenue
Perfectly Inelastic
Quantity doesn't change at all regardless of price. Think life-saving insulin.
Inelastic
Quantity changes less than price. Necessities like gas and bread.
Elastic
Quantity changes more than price. Luxuries and goods with substitutes.
Perfectly Elastic
Any price increase drops quantity to zero. Theoretical extreme for perfect substitutes.
Real-Life Examples
Insulin (Inelastic)
Real-world caseDiabetics need insulin to survive. If the price doubles, they still buy roughly the same amount. is highly inelastic (Ed ≈ 0).
Takeaway: Necessities with no substitutes → inelastic
Restaurant Meals (Elastic)
Real-world caseIf restaurant prices rise 20%, many people cook at home instead. is elastic because there are close substitutes (home cooking).
Takeaway: Goods with substitutes → elastic
Gasoline (Short-run Inelastic)
Real-world caseWhen gas prices spike, people still need to drive to work tomorrow. Short-run is inelastic. But over years, people buy fuel-efficient cars or move closer to work — long-run is more elastic.
Takeaway: increases over time as people adjust
Luxury Watches (Elastic)
Real-world caseA 30% price hike on luxury watches causes a large drop in sales — they're optional luxuries with many alternatives. is highly elastic.
Takeaway: Luxuries → elastic
Related topics
GDP & Economic Growth
Gross Domestic Product is the headline number economists watch. But what does it really measure — and miss?
What GDP Counts
adds up everything a country produces: consumer spending, business investment, government outlays, and exports minus imports.
Expenditure approach
C = consumption, I = investment, G = government, X−M = net exports.
Real vs Nominal GDP
Nominal uses current prices. Real adjusts for . If nominal rises 8% but prices rise 6%, real growth is only ~2%.
Always compare real GDP — it strips out inflation so you see true output growth.
GDP Per Capita
Dividing by population gives average output per person. India's exceeds Switzerland's, but Switzerland's per-capita is ~40× higher.
Per-capita GDP is a better proxy for living standards than total GDP.
Real-Life Examples
China's Growth Miracle
Real-world caseFrom 1980–2010, China's grew ~10% per year, lifting 800M people out of poverty. This was driven by exports, infrastructure investment, and market reforms.
Takeaway: Sustained high growth can transform an economy in one generation
The 2008 Recession
Real-world caseThe global financial crisis caused U.S. to shrink 4.3% from peak to trough. doubled to 10%. It took 4 years for to recover.
Takeaway: Recessions reduce and raise sharply
GDP Isn't Everything
Real-world caseIf a country cuts down all its forests, rises (timber sales) but wellbeing falls. measures market activity, not happiness, health, or sustainability.
Takeaway: is a useful but incomplete measure of welfare
Related topics
Inflation & Purchasing Power
silently erodes what your money can buy. Understanding it is essential for personal finance and economic policy.
Formula:
FV = future value, PV = present value, r = rate, n = years
In 10 years, it will cost
$162.89
That's +$62.89 more
Today's $100 will buy only
$61.39
in today's goods, 10 years from now
Cost growth over time
What Causes Inflation
has two main drivers. -pull occurs when total spending outruns . Cost-push happens when production costs (wages, materials) rise and push prices up.
Demand-pull: 'too much money chasing too few goods.' Cost-push: rising input prices.
Measuring Inflation
The Consumer Price Index (CPI) measures the average change in prices for a typical basket of goods. If CPI rises 5%, the cost of living rose about 5%.
The CPI tracks a fixed basket of goods urban consumers buy monthly.
Winners & Losers
redistributes wealth. Borrowers win (they repay with cheaper money). Savers and fixed-income earners lose. Real estate and stocks often rise with .
Unexpected inflation hurts lenders and savers but helps borrowers and asset owners.
Real-Life Examples
Zimbabwe Hyperinflation
Real-world caseIn 2008, Zimbabwe's reached 79.6 billion percent per month. Prices doubled every 24 hours. People needed wheelbarrows of cash for bread. The currency was abandoned.
Takeaway: When governments print too much money → hyperinflation
The 1970s Stagflation
Real-world caseOil shocks in 1973 and 1979 caused U.S. to hit 13.5% even as rose. This "" challenged the idea that and move oppositely.
Takeaway: shocks can cause AND simultaneously
Post-COVID Inflation
Real-world caseIn 2022, U.S. peaked at 9.1% — the highest in 40 years. chain disruptions, stimulus spending, and energy shocks all contributed. Central banks raised interest rates aggressively.
Takeaway: Multiple factors — , , and policy — can drive
Japan's Deflation
Real-world caseSince the 1990s, Japan has often experienced (falling prices). While cheaper goods sound nice, discourages spending and investment, slowing growth for decades.
Takeaway: can be as dangerous as high
Related topics
Opportunity Cost & the PPF
Every choice means giving something up. is the value of that next-best alternative — the heart of economic thinking.
Lower = fewer resources available (curve shifts in)
Point A — Butter-heavy
Butter
80
Point B — Guns-heavy
Butter
30
Opportunity Cost (A → B)
-50 butter ↔ +48 guns
Each unit of butter costs ≈ 0.96 guns
What Is Opportunity Cost?
If you spend 3 hours watching TV, the is what else you could have done: studying, working, or exercising. Economics forces you to count those hidden costs.
Opportunity cost isn't just money — it's time, energy, and the next-best option you gave up.
Why the PPF Bows Outward
The is concave because resources specialize. Shifting from butter to guns first uses resources best suited for guns — low . But eventually you divert butter-making resources, raising the cost.
Increasing opportunity cost: resources aren't equally good at producing everything.
Three Things the PPF Shows
Related topics
Compound Interest & Saving
The most powerful force in personal finance. Start early, and time does the heavy lifting for you.
Formula:
Total in 20 years
$56,131
You contribute
$25,000
Interest earned
$31,131
Growth over 20 years
💡 Notice how the curve steepens — that's compounding. Your interest starts earning its own interest.
The Power of Starting Early
Compounding means your interest earns interest. The earlier you start, the more dramatic the snowball effect — even if you invest less total money.
A person who saves $200/month from age 20–30 then STOPS often ends up with more than someone who saves $200/month from age 30–65.
The Rule of 72
A handy mental shortcut: divide 72 by your annual return rate to estimate how many years it takes for an investment to double.
At 7% return, money doubles in ~10 years. At 10%, it doubles in ~7 years.
Related topics
Fiscal & Monetary Policy Lab
Governments and central banks steer the economy. Adjust interest rates and spending, then watch and respond — can you hit the 2% target without causing a ?
Monetary Policy
Conducted by the central bank through interest rates and money . Raising rates makes borrowing expensive, slowing spending and investment. Cutting rates does the reverse.
Central banks (like the Fed or ECB) raise rates to cool inflation and cut them to fight recessions.
Fiscal Policy
Conducted by the government through spending and taxes. More spending or lower taxes boost (expansionary). Cutbacks or higher taxes restrain it (contractionary).
Government spending is a powerful but slow tool — and deficits must eventually be repaid.
The Policymaker's Dilemma
There's no free lunch. Stimulating the economy pushes unemployment down but inflation up. The 1970s showed that supply shocks can break this trade-off, causing stagflation — high inflation and high unemployment at once. Try setting a high interest rate and low spending above to see a recession form, then reverse it to overheat the economy.
Related topics
Comparative Advantage & Trade
Why do countries trade even when one can produce everything? The answer — — is one of economics' most powerful and counterintuitive ideas.
Absolute vs Comparative Advantage
= produce more with the same resources. = produce at a lower . Trade is driven by , not absolute.
Even if you're better at EVERYTHING, you still benefit from trade — because of opportunity cost.
Why Trade Creates Value
When each country specializes in its lowest-opportunity-cost good and trades, the pie grows. Both sides can consume more than in isolation — a positive-sum game.
Specialization + trade lets total output exceed what any country could produce alone.
Try This Challenge
Set Alpha to max 100 wine / 80 cloth and Beta to max 60 wine / 120 cloth. Notice Beta is better at both goods in absolute terms? Yet each still has a comparative advantage in one. Watch how specialization raises total wine and cloth output — the magic of trade.
Related topics
Inequality & the Lorenz Curve
How unequal is income, and how do we measure it? The and are economists' go-to tools for quantifying the gap between rich and poor.
Reading the Lorenz Curve
The 45° line is perfect equality — everyone earns the same. The plots the actual cumulative income share against cumulative population. The bigger the gap between the two, the higher inequality.
The more the curve bows away from the diagonal, the more unequal the distribution.
Gini Coefficient
The Gini condenses the whole into one number: the ratio of the area between the equality line and the curve (A) to the total area under the equality line (A+B). It ranges from 0 to 1.
Gini from Lorenz curve
Gini 0 = perfect equality; Gini 1 = one person has everything. Most countries fall between 0.25 and 0.55.
Real-Life Examples
South Africa's Divide
Real-world caseSouth Africa has the world's highest Gini (~63), a legacy of apartheid. The top 10% earns over 50% of all income. Inequality fuels crime, unrest, and political instability decades after democratic transition.
Takeaway: High inequality (Gini > 50) destabilizes societies — it's not just an economic issue
Nordic Balance
Real-world caseNorway and Sweden (Gini ~27–30) combine market economies with strong redistribution. High taxes fund universal healthcare, education, and pensions. Result: high per capita AND low inequality.
Takeaway: Progressive taxation + social spending can reduce inequality without killing growth
The U.S. Gap
Real-world caseSince 1980, U.S. productivity rose ~70% but median wages only ~20%. The top 1% now takes 20% of income (was 10% in 1980). Gini climbed from 34 to 39 — the highest among rich nations.
Takeaway: Growth alone doesn't ensure shared prosperity — distribution matters
Related topics
The Circular Flow of Income
See how money, goods, and resources circulate endlessly between households and firms — the heartbeat of every economy.
Related topics
Market Structures
Not all markets are created equal. From perfect competition to monopoly — the structure shapes prices, choices, and power.
| Structure | Number of firms | Product type | Entry barriers | Price control | Real example |
|---|---|---|---|---|---|
| Perfect Competition | Very many | Identical | Free | None (price taker) | Agricultural commodities, forex |
| Monopolistic Competition | Many | Differentiated | Relatively free | Some | Restaurants, clothing brands |
| Oligopoly | Few | Similar or differentiated | Barriers exist | Significant | Airlines, smartphones, soft drinks |
| Monopoly | One | Unique, no substitutes | Blocked | Complete (price maker) | Local water utility, patented drug |
Competition Spectrum
As you move right, firms gain more pricing power but consumers have fewer choices. Most real-world markets sit between the extremes.
Related topics
Test Your Knowledge
13 questions across all topics. Get instant feedback with explanations — your best score is saved automatically. Pro tip: use keys 1–4 and Enter.
Economics Glossary
Quick definitions for 26 key terms. Searchable and filterable by category.
Scarcity
BasicsThe fundamental economic problem: unlimited wants vs. limited resources. Everything in economics flows from scarcity.
Opportunity Cost
BasicsThe value of the next best alternative given up when making a choice.
Supply
MarketsThe quantity of a good producers are willing and able to sell at each price.
Demand
MarketsThe quantity of a good consumers are willing and able to buy at each price.
Equilibrium
MarketsThe price where quantity supplied equals quantity demanded; the market clears.
Elasticity
MarketsA measure of how much one variable responds to changes in another (e.g., how much demand falls when price rises).
GDP
MacroGross Domestic Product — the total market value of all final goods and services produced in a country in a period.
Inflation
MacroA sustained increase in the general price level, reducing purchasing power.
Deflation
MacroA sustained decrease in the general price level.
Unemployment
MacroThe share of the labor force actively seeking work but unable to find jobs.
Fiscal Policy
PolicyGovernment use of spending and taxation to influence the economy.
Monetary Policy
PolicyCentral bank actions (interest rates, money supply) to influence the economy.
Comparative Advantage
TradeThe ability to produce a good at a lower opportunity cost than others — the basis for trade.
Circular Flow
MacroThe continuous flow of money, goods, and services between households and firms in an economy.
PPF
BasicsProduction Possibility Frontier — the max combinations of two goods an economy can produce with given resources.
Surplus
MarketsWhen quantity supplied exceeds quantity demanded at the current price.
Shortage
MarketsWhen quantity demanded exceeds quantity supplied at the current price.
Recession
MacroA significant decline in economic activity, typically two consecutive quarters of negative GDP growth.
Interest Rate
PolicyThe price of borrowing money, expressed as a percentage per period. The central bank's main monetary policy tool.
Phillips Curve
MacroThe short-run inverse relationship between inflation and unemployment — lower unemployment tends to mean higher inflation.
Absolute Advantage
TradeThe ability to produce more of a good than others with the same resources. Distinct from comparative advantage.
Compound Interest
BasicsInterest earned on both the original principal and previously accumulated interest — "interest on interest".
Stagflation
MacroThe combination of stagnant growth (recession) and high inflation — a tricky scenario for policymakers.
Gini Coefficient
InequalityA measure of inequality from 0 (perfect equality) to 1 (perfect inequality). Derived from the Lorenz curve.
Lorenz Curve
InequalityA graph showing income distribution: the cumulative % of income earned vs. cumulative % of population. Further from the diagonal = more unequal.
Ready to think like an economist?
Revisit any section, replay the interactive graphs, or retake the quiz. Economics is a muscle — the more you practice, the stronger it gets.