Constructivist Lessons & New Teachers

I am very interested in working with new teachers and I always have enjoyed working with preserve teachers in my classroom. As I was thinking about our discussion on basing lessons on a constructivist problem/solution approach as opposed to a more traditional approach of teaching, I thought about what the undergrads must have been thinking as we are saying what "good" teaching looks like. I know how incredibly overwhelming your first year of teaching is and I know that most first year teachers will be lucky to even get in one lesson/unit in a constructivist framework just because it is so time consuming. Also, to plan a constructivist based lesson/unit you really need to be able to see the whole picture of your curriculum to integrate subjects. Most teachers will not be able to see that until after their first year, or second semester at the very earliest. I think it is so important to give these preservice teachers and first year teachers permission to wait on these types of lessons until they have the basic fundamentals of teaching down first. I would hate for them to beat themselves up for not teaching the way "good teachers teach". It will evolve as they become more comfortable in their position. I think if new teachers are reminded of this, the rate at which teachers change careers after only a few years in the profession may be reduced. Just some thoughts I had that I wanted to share.