This game is like a "Choose Your Own Adventure" game. You will travel with Lewis and Clark to try to find a way through the Rocky Mountains to get to the Pacific Ocean. Read the text and make decisions along the way: http://www.nationalgeographic.com/west/
This map is a lot like the U.S. states song you listened to at the beginning of the year. See if you can complete the map, and learn the state's nicknames for every state you place correctly:
http://www.scholastic.com/play/states.htm