Go Go Graphic Novels
I've found that the key to keeping my third grade son reading is to feed him full of graphic novels and illustrated series (age-appropriate, of course). In addition to the super-popular "Captain Underpants" and "Diary of a Wimpy Kid" series, here is a list of books and series he has enjoyed this year.
My son was lucky enough to have his copy of book eight of this series signed by the author and illustrator at our library earlier this year! We are eagerly awaiting the final book in the series.
This series is an twist on the classic, "Jack and the Beanstalk."
My boys love these comics as much as they love the PVZ video game.
I wasn't sure my son would enjoy this series with a female as the main character, but it didn't matter. He loved the "Oddly Normal" series.
Being from the PNW, any yeti book is a must read.
This series was witten and illustrated by the same author/illustrator of the "Mighty Jack" series.
The DATA Set series includes several titles, which makes it nice to keep kiddos reading.