[William Sleator's The Boy Who Reversed Himself is] a book catering to a preteen or early teen audience about three high school students' adventures in 4-dimensional (and higher) space. It includes some good conceptual explanations of how four-space would work.

An awsome book! I'm 12 years old and I find this book to give a good deal of 4-D theorys that I've used in my own writing work.

This is great! Lots and lots of 2D : 3D as 3D : 4D stuff, very well explained, and almost all correct (two errors: page 39, someone flipped over through 4-space perceives her handedness as changed, and p.134 a hypercube is described as non-euclidean). Very mathematical, and very enjoyable. Also accurately reflective of the inner life of teens. Excellent. This has got to be one of the best mathematical novels I've ever read.

I thought this book was AWESOME!!!. I'm 10 yeard old, and this book really got me thinking about other dimensions and physics. I thought that it was really well written.

i read this when i was about 13... one of the best books i've ever read! had me wishing for years that i could figure out how to get to the fourth dimension... i think i need to find a copy and read it again.

I remember this book, I read it about five years ago when I was eleven or twelve, and I've always remembered it...It was just a random pick off the teacher's shelf but ended up being an excellent read.

This book is really amazing... it was something beyond my imagination... it was carefully written, giving the fullest explanation he can give... so, Mr. Sleator, i salute you... You're one of my mentors in writing these kind of books...

worst book i've ever read!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! the author isn't doing a good job explaining stuff most of the book's content is very unrealistic!!!

I'm 12 years old and I thought it was so boring I wanted to sleep while reading it. I thought it was horrible, with no point at all. The main characters are dull with no personality at all. Although I think the author had a very good idea of how 4-space looked. I thought it was an appauling book though, it was like reading the nursery book 1, 2, 3 Little Bunnies all over again. Horrible book.

This book is fantastic. Not only is it a wonderful science fiction novel in its own right, the story is a good way to easily digest the ideas of 4-D and higher-dimensional space. As a parent, I have been looking for books to recommend to my children to teach them math, and this novel is now on the top of my list.