Our Baffling Planet is a series of early reader books for ages 5 to 7. They are science based, teaching kids about the water cycle, plant life cycle, and rock cycle.
Harold the Raindrop teaches children about precipitation, crystallization, temperature inversions, updrafts, percolation, transpiration, runoff, tributaries, watersheds, evaporation, and condensation. The book also touches on the different types of clouds in our atmosphere, the different kinds of rivers in a watershed, and the different states of matter.