ABSTRACT Khoiriah, Nafisa. 2024. “Investigating Politeness Strategies in Teacher Talk toEncourage Effective Interaction in The EFL Classroom of SMA Negeri 2Kota Magelangâ€. A Paper. English Education Department. Faculty ofEducation and Teacher Training Universitas Tidar. Advisor I Dr. SriSarwanti, S.Pd., M.Hum., Advisor II Puri Bakthawar, S.Hum., M.A. Keywords: Politeness Strategy,…