This 28-page packet contains explanations, graphics, and exercises: fill-ins, multiple choice, and questions and answers for "Shoe" (root changing verbs. There are ample exercises (17) to help students master the concepts.
Check out my "Roller Skate" verbs for the changes in 3rd. person sing. and plural preterit, and my "Shoe Verbs and Roller Skate Verbs in the Subjunctive." These are all sold separately or as one complete book, "Shoe and Roller Skate Verbs: Present, Preterit, and Subjunctive." Answer keys have been added to all three.