My DD loves looking at science experiments on you tube. Even though you want your DD to come up with some ideas of her own, we found looking at lots of experiments from other people helped spur ideas. It also showed her what was possible and how to tackle an experiment.
Once your daughter starts to get some ideas about the types of questions she wants to ask, as Zen Scanner suggests, she can jot ideas in a journal and do a little research on them.
I think it's a lot easier to look at what others have done and come up with new questions that just start cold with a brand new idea. Once she learns how the process of science questioning works then the novel will follow.
Last edited by ndw; 10/13/14 10:35 PM.