Lesson 8 · Written for kid, teen, and little
The Hidden Cost of Choosing
Every yes to one thing is a quiet no to something else.
Every dollar can only do one job. When you use $20 on a hoodie, the real cost isn't just the $20 — it's the next-best thing that $20 could have done, like three lunches or money added to your investing account. That skipped option is called the opportunity cost, and it's hidden because you never see the thing you didn't choose. Choosing isn't bad; choosing without noticing what you gave up is what gets expensive ⚖️
Words to know
4Opportunity cost
The next-best thing you gave up when you picked something else. Buy the $15 game and the opportunity cost is the $15 book you did not buy.
Trade-off
Getting one thing by giving up another, because you cannot have both. More hours on the bike means fewer hours on the guitar.
Alternative
The other choice you could have made instead. If you bought the blue shoes, the red ones were the alternative.
Limited
There is only so much of it. Your money and your time are both limited — a day has 24 hours no matter what you do.
Match each choice to what it costs you.
0 / 4 matched
In the full lesson
- 1Match the pairs
- 2Work out the number
- 3Make the call
Vine has 107 lessons like this one, each written three ways so a 7-year-old and a 17-year-old both get a version that fits.
The practice portfolio is open.
Start practicingMore in Start here
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- 📈Why prices moveNews, demand, and what people believe.
- ❄️Compound interestDrag the sliders to see how time builds wealth.
- 🧺Spreading your betsWhy one bad pick shouldn't sink everything you own.
- ⏳Time in market beats timing itA long-term plan means fewer guesses about when to jump in or out.
- 🛒Needs vs. WantsNeeds keep you okay; wants make life fun — and knowing which is which protects your money.