In this writing worksheet, students will learn the rules for converting singular nouns that end in the letter "Y" into plural nouns, which can be a bit tricky! The worksheet explains that nouns ending in "Y" are changed to "ies" or "ys" depending on the spelling. For example, one fly becomes many flies and one key turns into many keys! This grammar worksheet is designed for second-grade classrooms and provides ample practice with plural nouns and helps students decode word structures effectively.