David, a college senior majoring in history, was concerned that his knowledge of history would be insufficient to teach high school. he was considering enrolling in more american history courses to prepare himself for the classroom. according to research about teacher effectiveness, what is most likely a better use of david's time as he prepares to teach

I believe the answer is: Developing an understanding of the content of the school curriculum that students will be expected to know

By developing an understanding of the content, David would most likely able to presented his teaching in a more unique and non-monotone way without missing the core information. This would most likely increase the student's interest and understanding in david's classes.

The most likely a better use of David's time in order to prepare for teaching highschool students regarding the American history, is to go to museums alongside studying. Going to museum may be a better way of acquiring historical knowledge that is embedded in the replicas and the remains of ancient objects.