What books did you work on with your teacher? You would probably be more comfortable with a book that you are familiar with.
Jeff
Well, I started when I was 14 or so, with the goal of playing marching percussion, so I used Stick Control and Modern Reading Text in 4/4. I liked those books, but they might be a little dry for a 7 year old.
would also recommend Carmine Appice's rock drumming for kids