Why do you need an interactive learning environment?
We are all too familiar with the problems with traditional classrooms.
Where a teacher like yourself stands in front of the class with the best intentions to educate students seated in front of you.
What we end up with is the teacher speaks, and the students either listen or stare into blank space in boredom.
If you choose to teach with visual aids on a projector, your movement is limited by the length of the HDMI cable between the laptop and the projector.
This rigid and inflexible cable means you are restricted to using an HDMI compatible laptop.
Therefore, you lose the opportunity to get closer to students for interactive teaching experience.