I am REALLY into books and themes! Some of the below books are probably reading level 5-6 (the classics 160-180 pages). We read them as a class, taking turns reading out loud or I read them to the class.
The Big Balloon Race by Eleanor Coeer (I can Read, level 3). It is historically based and could work into a theme on transportation, flight, balloons, racing, or female pilots (or male for that matter!). In that same line (level 2?), is Angela's Airplane by Robert Munsch.
I just bought these books and am going to work them into themes (each about 180p): The Adventures of Sherlock Holmes, The Adventures of Robin Hood, and Oliver Twist. I don't have anything in mind yet to go with them.
For Feb-March, when the Iditarod is going have planned The True Story of Balto or Balto (level 2 or 3). I can't think of the author right now. It is a true story about a sled dog. And along with that The Call of The Wild by Jack London. Will include with that Snowshoe Thompson (level 3) by Levinson. Dogteam by Gary Paulson (level 3).
LOTS of information at this site for study of the Iditarod, even some file folder games for the Balto book I think:
http://www2.grand-forks.k12.nd.us/ms.../iditarod.html
For a western or wagon train days theme we are reading The Adventures of Tom Sawyer (about 180p), and these others level 3 books: The Golly Sisters Go West by Betsy Byars, Wagon Wheels by Brenner, Buffalo Bill and the Pony Express by Eleanor Coerr, and the Josefina Story Quilt by Eleanor Coerr.
A series of books the kids love is the Captain Underpants books by Dav Pilkey. I am trying to work that into.. something! A theme about heroes or about underwear?! Anyone have some ideas on books to go with this?
Polar Bears Past Bedtime by Mary Pope Osborne (level 3) The Polar Bear Son by ? or maybe igloo theme: The Igloo by David Yue (level 4?), Building an Igloo by Ulli Steltzer (level 2).
For a pirate theme, we read a couple of short books about pirates, one was Maggie and the Pirate by Ezra Jack Keats, and then we Read Treasure Island. We are just about to read Robinson Crusoe (184p).