Lesson 3 of 84 · Economics
⭐ 30 XP⚓ Market PortSupply and Demand
Supply and demand are important ideas in economics that help us understand how prices are set for the things we buy.
🎯 Your mission
Spot the cost behind the price.
⚡ The twist
Trade isn't just stuff — it's ideas, words, and germs.
Mind = Blown
🤯 The first stock exchange was in Amsterdam in 1602 — for spices.
Then & Now
💱 Every receipt you've ever seen has this idea inside it.
Supply and demand are important ideas in economics that help us understand how prices are set for the things we buy. Supply is the amount of a product that is available for people to purchase, while demand is how much people want that product. When more people want something (high demand) but there isn't enough of it (low supply), the price usually goes up. Conversely, if there is a lot of a product available (high supply) but not many people want it (low demand), the price may go down.
Key Facts
Supply refers to how much of a product is available.
Demand shows how much people want a product.
When demand is high and supply is low, prices usually rise.
Check Your Understanding
Question 1
1 of 2What does supply mean in economics?
Why this still matters
The next time you spend $1, ask: who else benefited besides you?
Stretch Challenge
Try this in real life this week.
Track every dollar you spend or get this week. Then figure out the pattern.
For the dinner table
“If you had $20 to start a business, what would you sell?”
Next Smart Lesson
We'll pick a lesson that matches exactly where your understanding is right now.
Share this lesson
Send it to a parent looking for a 5-minute “why does that matter?” conversation starter.