A rock is a rock, part of cliff, road or sea. But now can you guess what else it can be? A rock can be a...dinosaur bone, stepping-stone, hopscotch marker, fire sparker. Find out about the many roles a rock can play in this poetic exploration of rocks around the world. Laura Purdie Salas's lyrical, rhyming text and Violeta Dabija's glowing illustrations make simple yet profound observations about seemingly ordinary...