AUTHOR=Ilishkina Daria I. TITLE=Rethinking the evaluation of educational intervention effectiveness through Activity Theory: a mobile app example JOURNAL=Frontiers in Education VOLUME=Volume 10 - 2025 YEAR=2025 URL=https://www.frontiersin.org/journals/education/articles/10.3389/feduc.2025.1532376 DOI=10.3389/feduc.2025.1532376 ISSN=2504-284X