This lesson plan outlines activities for warming up students, reviewing past material, and maintaining routines at the beginning of ESL lessons. It suggests greeting students as they enter, using name tags, puppet greetings for younger students or ball toss for older students, singing a hello song, checking homework, doing exercise commands, and reviewing vocabulary or games from previous lessons. The warm up sets the tone and frame of mind for learning while reviewing helps reinforce past material through familiar games and activities.