The document provides instruction on forming the possessive and plural forms of irregular nouns in English. It discusses nouns ending in f or fe that can add only -s, change f to v and add -es, or use both forms. It also addresses nouns ending in y, which change y to ies in the plural. Examples are given for each case. The class is then divided into groups to practice forming possessive nouns by matching pictures of nouns to things they possess.