This Power Point explains the rule of changing y to i and adding es to make some words plural. The slides show the singular form of the word, and asked the question, What letter is in front of the y? The students then decide if the y needs to be changed to i before making the word plural. Then, the word becomes plural. Pictures are added for more interest. The last slide gives students an opportunity to demonstrate understanding. The Printable packet includes a poster, assessment, and word cards. I hope you find this helpful. Thank you for your interest. Please follow me and leave feedback.