* Science and Nature: Her books often explore the natural world, explaining scientific concepts in an engaging and accessible way. Some of her popular titles include:
* "What Makes a Hurricane?"
* "What Makes a Tornado?"
* "What Makes a Volcano?"
* "What Makes a Earthquake?"
* "What Makes an Ocean?"
* "What Makes a River?"
* Technology: She also writes about technology and how it works, making complex topics understandable for children.
In addition to her nonfiction books, she has also written:
* A few picture books, such as "The Day the Animals Went to the Dentist".
* Some fiction stories for young readers, though these are less well-known than her nonfiction works.
Overall, Joan Winer Brown is a prolific author who has dedicated her career to writing high-quality and engaging books for children, making science and technology more approachable for young learners.