Sánchez-Matamoros García G, Moreno Moreno M, Pérez Tyteca P, Callejo de la Vega ML. A learning pathway of length and its measurement as a conceptual instrument used by future teachers. RELIME [Internet]. 2018 Jun. 25 [cited 2026 Oct. 9];21(2). Available from: https://relime.org/index.php/relime/article/view/15