Computer science concepts that finally click.

Short, focused interactives that build one hard idea at a time. No scoring, no timers, no noise. Just the moment it makes sense.

One concept at a time

Each interactive does a single idea properly, instead of cramming a whole topic into a quiz.

No scores, no timers

Nothing to game and nothing to panic about. The goal is understanding, not points.

Mapped to the spec

Built around the exact vocabulary and ideas exam boards assess, so it reinforces the syllabus.

Works on any device

Runs in the browser on a class set, a projector, or a phone. Nothing to install.

Start with one, for free

The encapsulation interactive is open to everyone. Run it with a class today.

Open the free taster