What do the phrases “a flock of sheep” and “a string of pearls” have in common? They both include a collective noun. Barker Creek’s Collective Nouns Grammar Activity book includes numerous fun, often giggle-provoking examples of how collective nouns can enrich your students’ reading comprehension and writing skills. One of nine titles in the top-selling Building FUNdamentals book series. 48 reproducible activity pages. Coordinating poster available. Search: Barker Creek Grammar Posters.