Dataset from the experimental frugal integration of GenAI and multimodal platforms for L2 teaching and learning.

This dataset contains the anonymized results of a quasi-experimental study (n=91) conducted at a private Mexican university. The research evaluates a frugal techno-pedagogical ecosystem integrating Spaced Repetition Systems (SRS), Generative AI (GenAI), and multimodal platforms for English as a Foreign Language (EFL) acquisition. The data includes pre- and post-test scores for written and oral production (CEFR scale), alongside longitudinal measures of student autonomy, self-perception, and metacognitive accuracy. Key findings reflected in this dataset indicate that while GenAI served as a cognitive mediator, SRS drove statistically significant gains in writing skills. The dataset is organized into demographic information, group categorization (Control vs. Experimental), and performance variables. Español: Este conjunto de datos contiene los resultados anonimizados de un estudio cuasi-experimental (n=91) realizado en una universidad privada mexicana. La investigación evalúa un ecosistema tecnopedagógico frugal que integra Sistemas de Repetición Espaciada (SRS), IA Generativa (GenAI) y plataformas multimodales para la adquisición de inglés como lengua extranjera (EFL). Los datos incluyen puntajes de pre y post-test para producción escrita y oral (escala MCER), junto con medidas longitudinales de autonomía del estudiante, autopercepción y precisión metacognitiva.