Educational worksheet for learning singular and plural forms of animal names using "a" or "an" and adding "s" or "es" based on rules.

Worksheet titled "One animal? Two or more animals?" with instructions and examples for using "a" or "an" and adding "s" or "es" to animal names based on number and ending sounds, featuring images of various animals like cat, ostrich, lion, ant, panda, iguana, monkey, fox, zebra, and snake.