Bridge to Terabithia is about a boy and a girl, Jesse and Leslie who become best friends and together create wild kingdom. Jesse and Leslie have very different interests, but the two stick together like glue through everything, even when faced by a bully. This novel portrays relatable characteristics of friendship, and a father-son relationship through Jesse and his father.
I would read this novel in a fifth grade class room (Reading Level 4.6) and have my students describe each of the main characters and how they are different, and tell how the characters "cross the bridge", finding similarities between the characters and how they work together.