This book was based on a numbers problem that was solved in the 13th century by the mathematician Fibonacci, but is not a book about math - it is a book about RABBITS. Contains some fold-out booklets and a large surprise pop-up ending - with many many RABBITS! ! . Unpaginated, and in calendar format inside. Delightfully illustrated by the author Emily Gravett, and with wonderful paper engineering by Ania Mochlinska