Teach students when to double consonants or change y to i when adding endings -3d, -ing, -ly. These 7 animated slides illustrate the rules with cute characters and little stories (included in presenter's notes) that children enjoy and remember easily. Two of the seven slides help students understand root/base words, prefixes, and suffixes. I have used these for several years and find that my students remember the rules better afterwards. Print slides for anchor chart posters.