Why do we add S to some words but ES to others? And when a word ends with Y, how do we know whether to change the Y to I before adding the plural suffix? And why on earth does knife become knives? You can unravel these mysteries with six simple rules.
Free set of printable CRITICAL THINKING SKILLS Posters! Great for any secondary classroom! They come in two sizes! These differences are so important to know, especially when differentiating between persuasive and informative writing.