Developed a mathematically rigorous, student-friendly probability system:
• Grades 6–7: Correct inference without equating relative frequency = probability – just count possibilities
• Upper grades: Direct assignment of probabilities to populations (not sample-to-population) – logical, information-rich
Published in "Alternative Stochastik – korrekt, anschaulich, lebensnah" (German)
Full English method + free PDFs: www.martinwabnik.de
Making deep statistics accessible and correct for all students.