Activity: The Grocery Budget Detective — Level 5
The Grocery Budget Detective
Level 5 — The Solver | Ages 9–11 | Life Skills + Math | ⏱️ 15–20 minutes
This is a real-world activity. You will visit a store (or use an online grocery app), compare deals, and prove you found the best value — not just the cheapest price.
📋 What You Need
- 20 units of play money (or real money with adult permission) — your budget
- A grocery store or online grocery app
- This activity sheet (print or copy to notebook)
- A calculator (or use your brain — even better!)
🧠 Before You Start
Remember: Cheapest total price ≠ best deal. Calculate the unit price (price per piece, per cup, or per gram) to find the real winner.
🎯 Your Mission
Buy snacks for 6 friends (7 people total including you). Each person needs 2 snacks + 1 drink. You have 20 units. Find the best deals without going over budget.
Walk through the snack aisle (or scroll the app). Find at least 3 different options for snacks and 2 options for drinks. Write them down with prices and sizes.
Think: Don’t grab the first thing you see. Look for different pack sizes of the same item — that’s where the tricks hide!
My findings:
For each item, calculate: Unit Price = Total Price ÷ Amount You Get
👉 Which item had the biggest surprise? (The one that LOOKED cheap but wasn’t)
You need 14 snacks (2 per person × 7 people) and 7 drinks (1 per person × 7 people). Pick your items and calculate total cost.
👉 Did you stay under 20 units? If not, what will you change?
Find the same item sold as a single piece and in a multi-pack. Compare the unit price for each.
👉 When is buying a single piece actually smarter than buying the pack?
Take a photo of your shopping list, your calculator work, or the price tags you compared. (Ask an adult for permission if photographing in a store.)
⭐ Activity Reflection
🧠 Thinking Pause
- I calculated unit prices instead of just looking at total cost
- I spotted a “fake deal” where the bigger pack was not actually better
- I considered when convenience is worth paying more
Keep Exploring
More missions at your level