I use this technique frequently in high school math classes. I plan and structure lessons in such a manner that students learn from each other, rather than from me. There are times when I have to step in, and then I step right back out and let them go.
Sometimes I print these lessons on worksheet-type things that the students work through. Sometimes I manage their learning without worksheets. In every case, though, I consciously plan opportunities for students to talk to each other and learn from each other.
Complete list of activities that activate students as instructional resources available on this blog.