Comment SF for kids (Score 1) 726
I'm an SF writer (and theoretical physicist). My work appears often in Analog Magazine (40 stories so far).
Naturally enough, I'd like to recommend my own novels and short story anthologies. With the possible exception of 'SF Stories for Linux Geeks', they are all kid-friendly.
They're available for e-readers (MOBI and EPUB). Just go to the Amazon Kindle Store and search on 'Frithrik' (my old college nickname). Read about them there--but no need to buy any of them. Just go to my website www.frithrik.com and click for free copies (mention SLASHDOT for faster response).
Perhaps 'Moon over Saint Frankenstein's' (a YA novel about good werewolves) would work best for your eight-year-old.
BTW: the free book offer extends to everyone.