The third lesson in the series introduces students to word sums which is a tool used to construct and deconstruct a word in order to understand the meaning of a word. When using this process students explore word structure, meanings, and relationships among words having a common root. Included in this lesson are whole class and individual activities, two student handouts with answer keys, a Prefixes to Know bookmark, and a Suffixes to Know bookmark.This lesson is one of five lessons that area a