Lesson 3 of 84 · Economics
⭐ 30 XP⚓ Market PortSupply and Demand
Supply and demand are two important concepts in economics that explain how prices are determined in a market.
🎯 Your mission
Follow the money. Then follow the choices.
⚡ The twist
Trade isn't just stuff — it's ideas, words, and germs.
Mind = Blown
🤯 The first ATM was installed in 1967 — and used radioactive ink.
Then & Now
💱 This is happening in your local store every single day.
Supply and demand are two important concepts in economics that explain how prices are determined in a market. Supply refers to how much of a product is available for sale, while demand is how much of that product people want to buy. When demand is high and supply is low, prices tend to rise. Conversely, when supply is high and demand is low, prices usually fall. Understanding the balance between supply and demand helps businesses decide what to produce and how much to charge.
Key Facts
Supply is the amount of a product available for sale.
Demand is the desire and ability of consumers to purchase a product.
Price changes occur when the balance between supply and demand shifts.
Check Your Understanding
Question 1
1 of 2What does supply refer to 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.
Find two products that look similar but cost very different. Why?
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.