I currently do not have a teacher, and right now I'm trying to learn three pieces from Anna Magdalena's Notebook, three Mozart Minuets, the first two pieces from Burgmuller's Progressive Studies, the Spinning Song by Elmenreich, and Solfeggietto by CPE Bach. That's... 10 pieces? But at the same time, I learned all the notes in the Spinning Song in less than 45 minutes and now I'm just working on memorization and making absolute certain I'm using proper dynamics, etc. I almost have the first Burgmuller study learned, two of the mozart minuets are almost learned, as well as two of the pieces from AM's Notebook. It all depends on if you can handle the pieces.
When I practice, I take a chunk of the music, say... the first two lines until the repeat in one of the minuets, do hands separate to get a feel for each hand and to learn the notes, then put them together. With the Spinning Song, I did both hands from the start, because the left hand is practically the same throughout the entire piece. Depending on the piece will determine how I approach the music and a way to learn it. However, these pieces are not difficult for me. I've been practicing all of these pieces for about two weeks now, but I don't get to practice very much everyday... only 30 minutes to an hour, along with learning a couple of scales.