This article describes the construction and validation of rubrics aimed at systematizing information to assess the didactic suitability of a mathematical instruction process in its six facets. For the construction, the suitability indicators proposed by Juan D. Godino, forerunner of the Ontosemiotic Approach to Mathematical Instruction (EOS), were associated with four levels of achievement; A score was assigned to each of the levels, enabling the quantitative treatment of the indicators and the different facets of suitability. The reliability of equivalence of the instruments was evaluated through the test-retest technique and the calculation of Cohen’s kappa coefficient; the content validity of the levels proposed for each of the indicators was evaluated using the criteria of expert judges and the calculation of the V of Aiken.
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