Oral presentations can be used to assess students' knowledge and understanding of a topic. They require students to research a topic, prepare a presentation, and deliver it to an audience. Presentations are commonly done individually using PowerPoint or Prezi and can also be done in small groups. It is important to clearly outline the expectations, criteria, and what will be assessed. Presentations can evaluate students' research, problem-solving, communication, and time management skills. While they provide benefits like practicing public speaking skills, challenges include student anxiety and the time required for preparation, delivery, and assessment.