C.S. Lewis and The Chronicles of Narnia

The Narnian Map

Home of the above, and plenty more...good place to root around.

http://www.narnia.com

Into The Wardrobe

Excellent site; includes plenty of scholarly papers on Lewis,

biographies, etc.

http://cslewis.drzeus.net

EduPlace Unit

Includes some good lessons (like the chapter by chapter vocabulary list,

as well as the chapter comprehension questions).

http://www.eduplace.com/tview/tviews/l/lionthewitchandthewardrob.html

Fact Monster

Quizzes and crosswords on the different Narnia books.
  http://www.factmonster.com/spot/narnia1.html