%0 Journal Article %T Method for Assessing the Complexity of Mathematical Reasoning in Educational Texts (on the Example of a Physics Textbook) %A Mayer, R.V. %K didactics, semantic information, complexity, text, textbook, formula, heuristics %J Standards and Monitoring in Education %D 2021 %N 9 %P 5 %I INFRA-M Academic Publishing LLC.