„Recent research suggests preschoolers’ understanding of the cardinal value of numbers, or the quantities represented by individual number words and numerals, is the most significant predictor of their later math achievement.“
Univ.-Prof. Dr. Nicole R. Scalise u. a., Symbolic Magnitude Understanding Predicts Preschoolers’ Later Addition Skills. In: Journal of Cognition and Development (2021), 22:2, S. 186.