The mechanisms of dissemination of the counting frames in the teaching of mathematics in Spain during the nineteenth century are studied. José Mariano Vallejo and Pablo Montesino proposed them in order to facilitate an arithmetic initiation based on intuition, following Pestalozzi's proposals. The diffusion channels considered were pedagogical…

This article aims to give an overview of the use and the meaning of images in two types of school textbooks used in Spain from the early twentieth century until the end of the 1960s: the textbooks "Lecciones de cosas" ("object lessons") and those used for the teaching of religion. For this analysis the iconographic-iconological…

This paper investigates the views of science and scientific activity that can be found in chemistry textbooks and heard from teachers when acid-base reactions are introduced to grade 12 and university chemistry students. First, the main macroscopic and microscopic conceptual models are developed. Second, we attempt to show how the existence of…