What do you mean by "page"? Do you mean Activity?
Class_Globals is used inside a user-defined class. If you make them Private, they will only be visible inside that class. If you make them Public (or just use "Dim", which is the same as Public) then they will accessible from outside the class. Either way, you must create an instance of that class to use them. Code modules don't have to be (and cannot be) instantiated. Once you write the code module, its global variables are accessible anywhere else in the project.