“Effect of the „Rostock Modell” Didactic Program on Primary School Students Learning Natural Sciences”, trainingandpractice, vol. 12, no. 1-2, pp. 105–120, Jun. 2014, Accessed: Dec. 15, 2025. [Online]. Available: https://journal.uni-mate.hu/index.php/trainingandpractice/article/view/5108