The student teacher observed a 10th grade English lesson on "If Clause - Type 2" taught by her mentor teacher. The lesson began with a warm-up where students shared what they did over the weekend. The teacher then introduced the grammar point by presenting a dialogue between two characters, Elena and her mother, to establish the context. Students practiced identifying and constructing sentences using "If clause - Type 2" through fill-in-the-blank, multiple choice, and substitution exercises. They also engaged in a paired dialogue activity to demonstrate their understanding of forming and using the grammar structure to express hypothetical or unreal situations in the present.