Cardboard Slot Join

What you need

•        Cardboard or thick card — cereal boxes, packaging, old folders

•        Scissors

•        Optional: a ruler and pencil to mark your slots

What are we finding out?

What can you build when the only join you're allowed is a slot? No glue. No tape. Just card into card.

Have a go

Start simple — join two pieces and see if they hold. Then keep going. What can you build?

Keep exploring

What happens if the slot is too wide? Too narrow? What if you cut from both ends? What's the biggest thing you can build before it falls down?

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