Nouns

Common and Proper Nouns

https://www.khanacademy.org/humanities/grammar/parts-of-speech-the-noun/types-of-nouns/v/common-and-proper-nouns

Singular and Plural Nouns

 https://www.youtube.com/watch?v=ETzngG8N3AU

Making Nouns Plural

all rules:   https://www.youtube.com/watch?v=ElyzuIrMXkI

                https://www.youtube.com/watch?v=koucv8ZUHzk

change y to i and add es:  https://www.youtube.com/watch?v=RMhMLSa5XGg

irregular:  https://www.youtube.com/watch?v=sG10HhMpans

                https://www.youtube.com/watch?v=kSmEWsFktTA