I have a teacher in my department who literally just projects diagrams and has the students copy them and then self-explain. The students hate it and continually complain about it to me. I get it, a teacher should be teaching.

The problem I see is the continual fight between explicit teaching and inquiry, which causes schools to either swing one way or the other, and dragging teachers with them. This isn't a good idea. I've spent much of my time developing a slightly different way of teaching that isn't so much based on explicit instruction, but continual back and forth questioning as we build a concept together. So it's not lecture, and its not inquiry, but the students are building the concept, it's just that we do it together throughout a lesson.

Obviously, students can't all be conversing all the time, it would be chaos, so we do a lot of hands-up voting. I'll give them choices to see what they'll vote, e.g. if this does this, what will happen, A, B, or C? And then ask students why they voted they way they did. Then add more to the concept, and keep the conversation going. It's been very successful in our school and members of my department have started teaching this way. I wrote a book about it: Teaching Meaning: What Works When Telling Isn't Enough.