The world is listening; just speak so it falls silent.
When using presentations as a form of speaking and listening, the following structure is one that I generally like to follow:
Hook: Build interest in the students. I usually skip this part because most of my speaking and listening lessons are linked to writing, which happens before speaking anyway, so the students have an interest in the topic already.
Model: Provide students with questions to answer or sentence frames to use and model a presentation based on the same. Before modelling the presentation, refer to the speaking menu and tell them what they should be looking out for.
Practice: Give students some time to write down their thoughts or go over it in their heads. I usually circulate the classroom at this time to see how they are working on the goal of the week when preparing for their presentations.
Present: Call students up one at a time to present their presentation. Ensure that all students are taking notes or using some rubric to grade the student. You can use a feedback form as a rubric for students to follow.
Feedback: After the student has presented, provide the classroom an opportunity to ask a question, provide positive feedback, and provide critical feedback. If this is new for the students then take some time to model how to ask a question, what makes a questions relevant/strong, and how to give feedback for a week or two. It takes them some time to get used to. You can start with a simple feedback form that is a checklist in the beginning and then progress to whatever works: