The summaries are: 1) The teacher used real-world examples (realia) to focus on the grammar point of the simple past tense. The instructions were clear and the exercises helped students practice. While it is difficult to fully observe online classes, this lesson effectively taught the grammar point within a meaningful context. 2) The teacher presented the grammar points of conditionals and imaginary situations by just talking, without practicing or interacting with students. The lesson relied only on oral explanations and the whiteboard, which would likely bore students quickly without opportunities to practice.