using Alice in my online class

[LadyGalasya]

We are using alice in my UoP online class. In the text we have with it, it mentions the Student CD and worlds contained on it. Im not sure why but we have no student CD is there a way to get these worlds?

[MrMoke]

Most books come with the CD housed in an attached holder, or a link to an on-line download. If you bought a used book, it may not have one.

Which book do they use?