This text is for 6th grade informational reading. Students should be able to determine a central idea of the text and how it is conveyed through particular details; provide a summary of the text distinct from personal opinions or judgments. Students should also determine the meaning of words and phrases as they are used in the text, including figurative, connotative, and technical meanings (License: https://creativecommons.org/licenses/by/3.0/us/).