Biografía del autor Bobby George is a lifelong student and entrepreneur, with a PhD in philosophy. George and his wife, June, founded and run Baan Dek-the first Montessori school in South Dakota. They also own and operate Montessorium, a Montessori app company. They live in Sioux Falls, South Dakota. Alyssa Nassner is an illustrator and hand letterer based in Philadelphia, Pennsylvania. She is the illustrator of the Montessori series for Abrams as well as several books for Chronicle and Ivy Press.