Studying affixes is part of building strong morphological understanding of the English language. It is part of building a solid reading foundation. The Literacy Nest is the decodable text source for a wide variety of text to support your students with a systematic, sequential progression. This resource introduces the 20 most common prefixes in the English language. --Prefixes Included--UN, RE, IN, IM, IL, (NOT) IR, DIS, EN, EM, NON, IN IM, (IN), OVER, MIS, SUB, PRE, INTER, FORE, DE, TRANS, SUPER