A plural noun names more than one. Most nouns just add s, but many third-grade words follow other patterns. A noun that ends in x, s, ch or sh adds es, so fox becomes foxes. A noun that ends in a consonant plus y changes the y to i before es, so baby becomes babies, while a vowel before the y keeps it, as in toys. Some nouns that end in f or fe change to ves, such as leaf and leaves.
And the irregular nouns, such as child, mouse and foot, have plurals that are simply their own. On this worksheet your child reads a short frame, such as one fox, two, and writes the plural on the line. Early rows add s or es. Later rows mix in the y and f rules, nouns that change completely, and nouns that stay the same, such as sheep. Say both words out loud before writing.
What your child will learn
Make plurals with s and es
Change y to i and f to v when the rule calls for it
Write irregular plurals such as children, mice and feet
Know the nouns that stay the same, such as sheep
Common Core standard: L.3.1.B
Worked example
One fox, two foxes: a noun that ends in x adds es, not just s.
Common mistake
Adding s to every noun, which gives forms like childs, mouses and babys.
Helpful hint
Say the word for more than one, then check the spelling rule.