Preschool Art: Maryann F. Kohl. I have checked out a number of her books and done some projects from them. I really like her approach to art for kids, as she says, "it's the process, not the product". Otherwise known as, 'process-art', the fun & learning is in the process of doing it, not in the result. She has books that teach all kinds of things with art - math, geography, culture, etc.