Our family - with kids ages 3, 6, 9, and 11 - all love the "Bear books" written by Karma Wilson and illustrated by Jane Chapman. The first one, Bear Snores On, is the story of Bear, slumbering at the end of winter, and his woodland friends gathering in anticipation of his awakening. The artwork is wonderful and the text is lyrical, with wonderful repetition that the kids pick up on right away.
There are six Bear books currently. Here are the additional five titles, with lots of copies available for checking out at the library:
Bear Wants More
Bear Stays Up for Christmas
Bear's New Friend
Bear Feels Sick
Bear Feels Scared
For more fun, visit Karma Wilson's Web site. In the teacher's section, she has ideas for activities and things to print out.