"What's a Pair? What's a Dozen?" by Stephen R. Swinburne is a children's book that explores concepts of counting and numbers in an engaging and educational way. Published by Highlights Press in 2000, this hardcover book is illustrated and contains 32 pages of whimsical stories and colorful images. The book is designed to help young readers understand basic mathematical concepts in a fun and interactive manner, making it a valuable resource for both juvenile fiction and nonfiction audiences.