Math in Children's Literature page will help you find books to perfectly complement any math concept. If I'm missing any titles, please let me know; this list has been pinned more than 182,000 times!
And if you want even more resources, check out the love2learn2day Pinterest page, also categorized by concept. I'm amazed and humbled by the 3,200+ followers there. Thank you for joining me on this journey to making learning something we love to do every day!