The Lightening Thief by Rick Riordan
Percy Jackson is a good kid, but he can’t seem to focus on his schoolwork or control his temper. And lately, being away at boarding school is only getting worse: Percy could have sworn his pre-algebra teacher turned into a monster and tried to kill him. Percy’s mom decides it’s time that he knew the truth about where he came from. She sends Percy to Camp Half-Blood, a summer camp for demigods (on Long Island), where he learns that the father he never knew is Poseidon, God of the Sea. Soon a mystery unfolds and together with his friends, one a satyr and the other the demigod daughter of Athena, Percy sets out on a quest across the United States to reach the gates of the Underworld (located in a recording studio in Hollywood) and prevent a catastrophic war between the gods. But to succeed on his quest, Percy will have to unravel a treachery more powerful than the gods themselves.
Review: We have been reading this as our nightly reading and my 8 year olds love it. They will not go to bed unless we have read. I have to say that Rick has done a fantastic job of creating a world around greek mythology. My kids are learning all about them now and want to go to Greece. For more info about Rick and this amazing series here is the link to his site.