Advice for On-Campus Interview? I have an on-campus interview next month. Being my first time to make an on-campus interview, I have no experience on how to properly do that. I was asked to give a teaching demonstration for 30~45 minutes. The university is focused on teaching  and they have only a master program (no PhD ). I am planning to present my research work as "a teaching demonstration". Is that okay?
I do not suggest this. You should probably be tailoring the presentation to be aimed at 1st, or maybe 2nd, year students/classes and you should attempt to make the lecture be understandable to non-majors. You should be pretending that the audience of the class is a general elective audience. While in actual practice a lecture in a class does not need to be self contained, a teaching demo should be.

Getting back to the question, almost anything that would be considered research related would be too advanced for a general elective audience. Now this does not mean to go completely away from your area of research. If you are electrical engineer whose research is biomedical 
in nature and are interviewing at a joint EE/CS department, it probably doesn't make sense to give a CS lecture on compiler design or even EE lecture onpower enginnering. You would be better served by giving a biomedical lecture. Of course, if the job advertisement asks for someone who can teach compiler design, well then, there is your lecture topic. Similarly, if the search chair suggests a topic, follow that advice.

The biggest thing to remember is teaching schools are not inferior to research institutions, they are simply different. They want to make sure you care about teaching and not your research. They generally tend to look at research as a way to get students to learn. Focusing on your research will probably send the wrong message.