Operation Skyggekode

A micro:bit is a small programmable board. It's also pretty boring to teach with by default.

Rosborg Gymnasium wanted something different. Not another lesson where students copied code off a whiteboard. They wanted them to build something.

The idea: a physical escape room in a box. Students work in groups and have to solve coding challenges under time pressure, coordinated through micro:bit devices talking to each other wirelessly.

A modular 1.5-hour session for upper-secondary students with no prior coding experience. Each group gets a box with micro:bits, sensors and instructions. The tasks ramp up in difficulty, but never so much that it feels impossible.

The first version was too hard. I knew that when I tested it. So I reworked it. That's the whole point of building something: you find out what doesn't work, and then you fix it.

The students got going right away. Nobody raised a hand to ask permission. They just built. They failed, tried again and shouted at each other in the good way.

The session is still used at the school.