As the teacher I think it is important to show students how to do research. If teachers model themselves actually researching and learning about the country then that is showing children that learning never stops. I also think teachers should participate in discussions. I don't think teachers should be in charge of the discussions but should participate. Teachers should ask questions to the students through out the lesson, this important because you are making sure the students are comprehending information and not getting lost.
Games also help check for comprehension.
Games allow the students to have fun and review at the same time.