Bobby Fischer Teaches Chess, although it's mostly about mating exercises. But that is an excellent place to start and the format of the book is good for young readers.
You should probably use the search function or Google (with site:chess.com) to look around here, I remember that this has been discussed at length before.
Hello,
I have recently started a chess club at school and would be grateful for any advise on beginner books for young children. Basic openings and tactics would be a must.
Thank you again.
Stew