Amelia Earhart was an American aviator, pioneer, and champion for female pilots. Hmm, some of those words are pretty difficult to understand. Never fear, the dictionary is here! Join us in this lesson as we learn how to use dictionaries. A dictionary is a book that tells us the spelling and meaning of EVERY WORD! It seems like a huge book, but once we learn to use it for the words we need, a dictionary is so useful. Be right back, I'm going to look up circumnavigate...