Ok guys, as I've said about 100 times already, I've only been playing since the beginning of the year. I only know how to play in 3 keys: C, Db, and Eb.
My teacher told me that, when learning a new key, I should play the scale for the key over and over, while calling out the scale degrees (1, 2, 3, 4, 5, 6, 7, repeat) for a while before I begin. What other exercises would help?