The audience builds a relationship with you as the speaker. Be purposeful on how you build this relationship.
The following are some ways to do this.
Use both analogue and digital techniques.
Poll Everywhere is a digital way to do this.
Asking better questions during your presentation and simply talking to people prior to your presentation are simple analogue ways to do this.
The audience also builds a relationship with your material or curriculum.
The best way to be purposeful here is to do your prework and know your audience.
Make your material meaningful to them by using examples they relate to rather than generic examples
Create space in the presentation for there thoughts and input.