The Water of Life, by the Brothers Grimm, first published in 1812.
This is such a good story, but it doesn't often make it into Grimms Fairy Tale collections. Maybe because of its length? Anyway, this story has everything: action, suspense, deceit, peril, gold, and a beautiful princess.
Arthur's Reading Race, by Marc Brown, Random House 1996.
A good OLD book about Arthur, reading, and family dynamics. Arthur still looks like an animal of uncertain origin, but, other than that, the illustrations are quite good.
Amelia Bedelia, written by Peggy Parish, illustrated by Fritz Siebel, Greenwillow Book, 2012, originally published in 1963.
This ridiculous little book had my first grade son in hysterics. And he read it entirely on his own. The delight illustrations only enhanced the story. Definitely a perfect book for emerging readers.
Down Comes the Rain, by Franklyn Branley, illustrated by James Hale, Harper Collins, originally published in 1963.
This is a very good book for learning about the water cycle. I do wish the author had used all three terms of the water cycle, though. "Precipitation" is conspicuously absent. This book also contains a very good description of how hail is formed.