Emily Mahoney 
Learn Irregular Plural Nouns with Elves [PDF ebook] 

There are many rules for irregular plural nouns, but let the magical elves in this vibrant volume make learning those rules easy! Some might think that elves just make toys in Santa’s workshop, but they are also experts on irregular plural nouns. Young readers will learn general rules as well as exceptions, in addition to facts about elves in the Magical Facts boxes. Engaging illustrations help this grammar concept become easily accessible for authentic learning.