ABSTRACT Nanda, D.A. (2024). The Effectiveness of the Think-Pair-Square-Share Strategy on Advertisement Text Writing Skills at SMP Negeri 7 Magelang in the School Year 2023/2024. An Undergraduate Thesis. English department. Faculty of Education and Teacher Training, Universitas Tidar. Keywords: Writing, Writing Skills, TPSS, Advertisement Text.Writing served as a form of communication intende…