Whether you are tapping your own trees, or just want to expose your children to the beauty of turning sap into delicious syrup, these are the books for you! (I know I said 8 books, but I couldn't resist and threw in a 9th!)
Sugarbush Spring by Martha Wilson Chall
Sugaring by Jessie Haas
Grandpa's Sugar Bush by Margaret Carney
The Maple Syrup Book by Marilyn Linton

Maple Syrup Seasons by Ann Purmell
Sugar on Snow by Nan Parson Rossiter

Sugaring Time by Kathryn Lasky
If you are looking for a chapter book to read aloud or for an older child, don't miss:
Miracles on Maple Hill by Virginia Sorensen
Little House in the Big Woods by Laura Ingalls Wilder
If you would like to learn more about how to tap your own maple trees, I show step-by-step how in my posts: