Known as the day that will live in infamy, the attack on Pearl Harbor in 1941 was a shock to all. But why was the United States unprepared on that December morning? Study a series of primary sources in a document-based question that...

Sometimes it's difficult to identify the idea that demonstrative pronouns refer to. Polish the use of this, that, those, and these in your class's writing. Several sentences are given, and your pupil must rewrite the sentence to clarify...