My apologies if there is already a thread about this. I did try searching and didn't turn anything up.

My daughter (9) is just about to finish the Harry Potter series. She saw Kim Stanley Robinson's Red Mars on the bookshelf and asked to read it next. It's been years since I read it, but I remember it being pretty complex and political. Much as I would enjoy discussing it with her, I think it might be a little bit ambitious for her first SF.

She read a Wrinkle in Time in school and has already listened to the Narnia books on audiobook.

I was thinking back to my own childhood reading, which was very eclectic because I was limited by what I could get at home or in my small town libraries. I remember Clarke, Asimov, Pohl, L'Engle, but also a healthy dose of Star Trek and Star Wars novels, and even the Death lands novels. It was mostly hard SF. I didn't really read much fantasy until grad school.

I feel like the landscape is pretty different now, with a lot more YA content in general and especially in the Fantasy/SF world. There are things with better representations and diversity as well. I spent an hour in the children's fiction section of our library, but I feel like it's difficult to separate the wheat from the chaff.

So Tilderinos, that are your recommendations or thoughts? I'm also interested in meta resources like book lists or reviewers that have been helpful to you. Much as I would like to read everything she reads, she has much more bandwidth than I do.

As I was writing this, my daughter came by and suggested I list some of her interests, which are: magic, dragons, wizards and witches, and being tired of having all happy endings. So while I'm not necessarily tied to SF and Fantasy only, that does seem like it will be the thin end of the wedge.

Edit:
I have compiled the recommendations from this thread into a spreadsheet listing each book or series with a short synopsis and other notes. I've also included the names of the books for most series. My apologies if I missed any.