As a case study, Mr. Johnson uses a film in his history class. He believes the film helps students understand westward expansion and the role of various cultural groups and key events. Mr. Johnson prefaces the film by giving students a list of concepts and events to focus their attention. During class, Mr. Johnson shows parts of the film, leaves the lights on for note taking, but didn't an provide opportunity for questions and discussion. What aspect of this plan does Mr. Johnson need to CHANGE?

Which of the following is not a common characteristic of agricultural villages throughout the world?

What is “the compromise of 1850? ” *

Before they can be published, scientific papers must be peer-reviewed. this means that: a) some other scientific experts read the papers and guarantee that they are true.b) some other scientific experts read the papers and provide quality control by eliminating many mistakes.c) an editor reads the papers, to make sure that all the semicolons are in the correct places.d) everyone in the world is given the opportunity to comment on the papers through a specially maintainedblog.e) government bureaucrats read the papers, to be sure that the papers do not insult the political positions ofthe current officeholders.