These sheets includes the forms how to get plural from from singular. Also you can find there list of exemptions and uncountable nouns as well. Can be used both for children and adults. 

nouns-in-pluralexemptionscountable-and-uncountable-grammar-guides_131511.docx

Countable and Uncountable Nouns for Azerbijan Students

countable-and-uncountable-nouns-for-azerbijan-students

Let's do English ESL general grammar practice. These sheets includes the forms how to get plural from from singular. Also you can find there list of exemptions…