Recommendation Letters?

<p>Hi,
I'm kind of in a difficult situation for recommendation letters because I am in a dual enrollment program with the quarter system. Quarters are 10 weeks long and it seems by the time I get to know my professor, the term is already over! I've had different teachers for each course, but am taking a year long online AP class. I have a feeling this probably wouldn't be ok, but is it acceptable to include letters of recommendation from an online teacher? The only other options I really have are to ask my teachers from sophomore year (I've changed a lot between sophomore year and this year because I was at NASA SHARP all summer and really grew up, became more independent and mature). Or should I just include recommendations from teachers that barely know me?
Please help.
Thanks :)</p>