I am trying to make an app for this:

http://www.youtube.com/watch?v=J2CAmW7c-Ow
http://www.bie.org/images/uploads/useful_stuff/Tubric.pdf [PDF]

This is a non-profit org and I am a teacher wanting to make this as a class project.

I looked at the Picker Widget and at another slide menu post and the Mario Slot Machine, but don't know what to use and how.

I was thinking that I could use images for the 4 "strips" and an overlaying image for the tube itself with a mask to show the strips. Besides that, I am lost :)

If any developer out there is interested in helping me and my students make this, let me know. -- skeinath [at] gmail [dot] com

I have an example project with the picker wheel in Ch.15 of the eTextbook that I think would answer your question. Just download the update: http://www.burtonsmediagroup.com/books/book-update/