Watch the video below and visit the Design Squad website for step-by-step instructions.
Step 1: Here's what you need to build a better lunchbox!
- Container (lunchbox, cardboard box, bag, etc.)
- Insulation (i.e., newspaper, cotton balls, packing peanuts, foam, bubble packaging, etc.)
- Plastic bag that closes tightly
- Something frozen (i.e., ice pop, ice cube, etc.)
Step 2: Choose your lunchbox
Step 3: Insulate your lunchbox
- Remember, materials don’t insulate! It’s the AIR that’s trapped inside a material that insulates.
- Cover the bottom half of the lunchbox with insulation.
Step 6: Add more insulation
Step 7: Close your lunchbox
Step 9: Still frozen?
Step 10: Did you know?
Step 11: Try this next!
- Build an even better lunchbox. Use your materials differently to trap more air. Or use different kinds of materials. See if you can get less melting in 30 minutes.
- Go for longer. Build a lunchbox that can keep something frozen for an hour. It helps to pre-cool the insulation and to keep the lunchbox away from serious heat.