Curricular proposal and training plan for the implementation of the virtual distance modality in the Preparatory School of the UNAN-Managua: Integration of the ADDIE instructional model with a constructivist pedagogical approach. torreon [Internet]. 2024 Jun. 25 [cited 2025 Aug. 6];13(37):32-47. Available from: https://revistas.unan.edu.ni/index.php/Torreon/article/view/4258