Collocations :

• Collocations - interactive exercise (a4esl.org)

• Collocations Related to Colour - interactive exercise (a4esl.org)

• Countables and uncountables - an interactive quiz (BBC)

Examples :

• Plural nouns in English (englisch-hilfen.de)

• Singular or plural for groups of people (englisch-hilfen.de)

• Foreign plurals (englisch-hilfen.de)

• Forming Greek- and Latin-derived Nouns (web.utk.edu)

• Plural Rules (Mark Symmonds) - (primaryresources.co.uk)

• Plural rules
  If it doesn't open, click on ENGLISH / Plurals
  (Primary Resources)

  

• Singular and Plural Nouns - PowerPoint Presentation (primaryresources.co.uk)

• Note on usage: "fish" vs. "fishes" (Wikipedia)
  

INTERACTIVE exercises :

• Singular and plural - Exercises and tests (englisch-hilfen.de)

• Le pluriel des noms - "Nouveau parcours grammatical d'activités et d'exercices sur internet, dont le but est d'apprendre à former le pluriel des noms."
  Créé par Hélène de Morel
  (memovoc.com)

• Exercices sur le pluriel (prononciation et écriture) - (worldofteacherfortin.perso.sfr.fr)
  
  
  
• Plurals - interactive quiz (BBC)

• Countable - Uncountable : interactive activities
  Contents : Likes and Dislikes
  Type of activity: Individual, Matching, Filling gaps, Right, Wrong
  (itereva.pf)

  

• Plural nouns.
  "How is the "s" prononced? it can be: /z/or /s/or /iz/
  Make your choice!"
  - Activity created by: Renée Maufroid

  

  
  

• A cat, Cats - activities created by Renée Maufroid :
  "Certains noms ont un pluriel régulier, d'autres pas.... Quel score as tu à ce jeu?"
  Matching - Flashcards - Concentration - Word Search

• Pluriels - associer les mots (Hervé Humbert)

• Plurals - "Look at the singular form and write the plural." - exercice interactif (Ghislaine Wulles)
  
  

Exercises TO PRINT :

• Irregular Plural Nouns - (rhlschool)
  "Underline the irregular plural noun in each sentence and write the singular form." - exercise to print

• SINGULAR AND PLURAL NOUNS - exercises (polseguera.org)

• Singular/Plural - exercises (wiltshire.ac.uk)

INTERACTIVE games :

• Jeu en FLASH sur le pluriel (prononciation et écriture) - (worldofteacherfortin.perso.sfr.fr)

• Fish Tanks - GRADES 5-6 (sadlier-oxford.com)
  " Fill a tank with tropical fish using your knowledge of plurals."

  

Poems :

• English is crazy! - A Poem about Plurals
  "We'll begin with box, and the plural is boxes,
  But the plural of ox should be oxen, not oxes..."
  (humbleapostrophe.com)

Videos :

• Merriam-Webster Ask the Editor - Octopus
  "Kory Stamper, an Associate Editor at Merriam-Webster, talks about the plural version of octopus." 
  (YouTube)

  

INTERACTIVE exercises :

• feminine / masculine - exercice interactif (Ghislaine Wulles)

• Gender-Free Language - interactive exercise
  ex : "policeman" = ...
  (a4esl.org)

INTERACTIVE games :

• "Guess the sex of these names! (kyoto-su.ac.jp)
  Some names are commonly used for both men and women,
  so there are three choices 'Male,' 'Female' or 'Both'."