Today i took a new pupil, he ´s about 9 years old (3rd grade). He ´s been studying English for 3 years. He studied with a group of children and right now his mom asked me to continue his English education but i have no experience with such little pupils. I usually work with teenagers. 
This boy has finished Oxford Team. And i don ´t know what to do next. I mean what book to choose. Please give me an advice. Is there a next level in Oxford Team series of book? What materials do you use in this case? (not in a group and a good level of English from a boy).