Lesson 51 of 84 · Trade and Commerce
⭐ 30 XP⚓ Market PortTrade Routes Through History
Opportunity cost is what you give up when making a choice.
🎯 Your mission
Trade-offs everywhere — find them.
⚡ The twist
Cheap for you usually means expensive for someone else.
Mind = Blown
🤯 The first ATM was installed in 1967 — and used radioactive ink.
Then & Now
💱 Every receipt you've ever seen has this idea inside it.
Opportunity cost is what you give up when making a choice. Spending your allowance on a book means you cannot also buy a toy. Every decision involves trade-offs.
Key Facts
Needs are different from wants.
Supply and demand affect prices.
Trade connects people globally.
Check Your Understanding
Question 1
1 of 2What is the difference between needs and wants?
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?”
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