Case Study
MathHero
Exam-focused mathematics learning across Germany's state profiles
MathHero is a nationwide platform for mathematics exam preparation in Germany. It takes learners from a short diagnosis through a personal plan and targeted practice to timed simulations and systematic work on past mistakes.
The challenge
Mathematics exams vary by federal state, school type, qualification, year, and permitted resources. The platform had to represent those rules accurately without duplicating the content for every profile, while grading structured answers and partial credit in a reproducible way.
The solution
The content model separates canonical skills, task families, and variants from their eligibility for individual exam profiles. A complete learning flow—diagnosis, plan, explanations, practice, timed training, simulation, and error book—sits on top, supported by deterministic scoring and automated content-quality checks.
The outcome
The production site is accessible, but the product is deliberately described as a technical beta with external launch gates still open. The verified snapshot contains 73 routes, 2,096 tests, and 1,980 published task versions; subject review, payments, SMTP, and legal approvals remain prerequisites for a paid public rollout.
System components
What the solution is made of
Three concrete components that turn the concept into a usable system.
A complete learning flow
Diagnosis, a personal plan, explanations, practice, timed training, simulation, and an error book form one connected product journey.
Profiles instead of content forks
Canonical skills and task variants are managed separately from state-specific rules and profile eligibility.
Reproducible quality
Deterministic grading, content validators, and an extensive test suite check the learning logic and release state.