Irregular Plural Nouns Teacher Posters and Practice Pages Irregular Plurals do not follow the regular forms of plurals created by adding an -s or an -es to the end of singular nouns. Video link https://youtu.be/BR0NOIKzoVAho The first poster focuses on irregular plural nouns that are created by changing the middle sounds and letters. The second poster focuses on irregular plural nouns that are created by changing the final -f to a -v and then adding -es. The third poster focuses on irregular plural nouns that remain the same.