Ring! Yo?

The two friends of the Caldecott Honor Book Yo! Yes? meet again...telephonically. We see one side of their conversation, shown through the simple words and body language of one boy (and can make up our own story for it) -- then, at the end of the book, the other boy's side is shown as well. The mood moves from cheerful to miffed and back again -- in a way kids will instantly recognize.