"When Zack falls off a ladder and breaks his arm, the worst part isn't his injury--it's missing the Nature Club's upcoming swim-a-thon. Stuck sitting by the creek while the others practice their strokes, Zack discovers a froglet with a damaged limb and names him Rana. Zack and his friends spring into action to help the froglet, only to discover more and more human-made hazards for the little frogs. As Zack's story unfolds in parallel with Rana's,...

"Izzy's family is moving to a big city at the end of the summer, and she is filled with dread. She'll start fifth grade at a new school where she doesn't know anyone. Meanwhile, a bird she names Señor Wilson also faces a big move. He'll soon migrate south for the winter--a journey full of peril. As Izzy's adventure unfolds in parallel with Señor Wilson's, it seems Izzy's worst fears may come true. It's only by finding her inner courage--with a little...