Start Small, Think Big is a series that sets readers on a journey of discovery, beginning from the small and familiar to new areas of knowledge where you really have to think big! Small Sparkling Raindrop starts with a raindrop falling from a cloud, the beginning of its journey to the sea. It lands on a mountainside in southeast Asia and rolls down the mountain to join the mighty Mekong River. This is the story of the water cycle and other key elementary-grade science topics, including its impact on the land and how vital it is for all living things on Earth. Thinking big, the book shows why clean, healthy rivers are vital for people and wildlife, including the critically endangered Irawaddy dolphin threatened by overfishing and pollution. A big fold-out map shows the major rivers of the world, an illustrated water cycle, and there's an I-Spy game to take children back into the book to further deepen the learning experience.