An online substitute teacher is a fill-in teacher for when the regular teacher is unavailable. As an online teacher, you use virtual means to teach students of any age. Through technology like video chat and televised courses, you administer lessons to a class of students, solicit feedback, assign homework, and engage in discussions. Your responsibilities include following the regular teacher’s lesson plan if they provide one and documenting student grades as applicable. Your duties can involve guiding students through online presentations, chatting in student forums, answering questions on the assigned material, and ensuring students remain engaged throughout the remote session.