Reflective teaching involves critical reflection on one's own teaching practices and styles. It has three levels: reflection-in-action during teaching, reflection-on-action after teaching through analysis of lessons, and reflection-for-action to decide on future actions. Effective reflection requires self-reflection through tools like teaching portfolios and journals. Teachers can also reflect through peer observation, action research, and developing critical friendships with colleagues to discuss practices and seek advice. The goal of reflection is to improve teaching and student outcomes by distinguishing effective methods from less successful ones.