BBC
Bbc: Skillswise: Plurals and Spelling Rules
The rules for spelling plural words and using them properly in English are made fun and easy with this BBC Skillswise worksheet for students.
Fact Monster
Fact Monster: Spelling Plural Nouns
A chart that shows general rules for regular and irregular plural formations for nouns, plus a list of some exceptions.
Other
The Schoolhouse: Lesson 16: Spelling Rule Plural Endings
Learn about making words plural by adding "es" through examples, sentences, and practice exercises.
Grammarly
Grammarly Blog: Spelling Plurals With S or Es or Other Plurals
Spelling rules and examples for adding -s or -es to make the plural form of a word.
Patsy Stevens
Garden of Praise: Musical Spelling Rules
Use these clever songs to help students learn basic spelling rules. Sheet music, as well as audio files, are available for each of 4 songs. Scroll down the page for interactive practice activity.
ClassFlow
Class Flow: Plurals
[Free Registration/Login Required] Investigate, collect and classify spelling patterns in pluralization; construct rules for regular spellings.
Other
Spelling It Right: Plurals of Words Ending in "X," "Sh," "S," "Ss," and "Ch"
Learn about making words plural by adding "es" through examples and practice exercises.
Other
Speakspeak: Spelling: Changing Y to Ies, Ied, Ier
A few rules and examples help students understand when and how to change words which end in -y, for plural nouns, verb forms, adjective and adverb forms.