Hint
Points at what to look at. Often just a question back.
HOW IT WORKS
A lesson, a check, and a boss that asks you to use the idea.
Every skill follows the same shape, so the structure disappears and only the subject is left to think about.
Meet the idea
A page explains why the idea exists, what it says in plain words, what it says more precisely, and where it connects to everything else.
Check the connection
One question per page, with a three-step hint ladder if you want it. Using a hint is not penalised in any way.
Face the boss
Each trial ends with questions that apply the idea to a new situation, diagnose a described symptom, or carry it into another field.
Keep the point
Skill points and achievements record understanding and persistence. Nothing is taken away for pausing or for being slow.
THE HINT LADDER
Help that leads instead of telling.
The three tiers are deliberately ordered, and none of them states the answer. A validator enforces that: if a hint ever quotes or paraphrases its own answer, the build fails.
Reasoning
Gives the relationship or the method, but not the result.
Picture
A concrete everyday image. The final step is still yours to take.
Start with counting. Finish wherever you like.
The Mathematics campaign is free to try, in English or Dutch, with no account.