Albert Gómez, María JoséBlázquez Merino, ManuelLópez-Rey García-Rojas, ÁfricaCastro Gil, Manuel Alonso2024-12-232024-12-232021-03-01M. J. Albert, M. Blázquez-Merino, Á. López-Rey and M. Castro, "Influence of Technological Resources on the Development of Mathematical Competence in High School," in IT Professional, vol. 23, no. 2, pp. 19-25, 1 March-April 2021, doi: https://doi.org/10.1109/MITP.2021.30626851520-9202; e-ISSN: 1941-045Xhttps://doi.org/10.1109/MITP.2021.3062685https://hdl.handle.net/20.500.14468/25037Este es el manuscrito aceptado del artículo. La versión registrada fue publicada por primera vez en IT Professional, vol. 23, no. 2, pp. 19-25, 1 March-April 2021, está disponible en línea en el sitio web del editor: https://doi.org/10.1109/MITP.2021.3062685. This is the accepted manuscript of the article. The registered version was first published in IT Professional, vol. 23, no. 2, pp. 19-25, 1 March-April 2021, is available online at the publisher's website: https://doi.org/10.1109/MITP.2021.3062685The use of information and communication technologies in the process of learning through technological resources can be strongly motivating for students. The use of appropriate digital content through simulations and animations can facilitate the understanding of complex content. In this work, the incidence of the use of technological devices by students of the mathematics subject in Secondary Education in Madrid (Spain) is presented. Specifically, in relation to the use of an explanatory video made with the Camtasia application. The sample was of 31 students with a low level of competence in the subject. A quasi-experimental method of pretest/posttest design was used through an experimental group and a control group. Specific materials were designed and produced for this research. All these materials were subjected to expert judgement. The results show that the use of the instructional video was more than positive in the different variables under study.eninfo:eu-repo/semantics/openAccess33 Ciencias TecnológicasartículoEducational digital resourcesinstructional videomathematical competencemathematical perception