Elinor J. Pinczes is an author known for her children's books which often incorporate mathematical concepts. One of her most popular works is "A Remainder of One," a picture book that deals with division and remainder in an engaging and accessible story for young readers. Pinczes has been praised for her ability to combine educational content with entertaining storytelling to create books that not only teach but also captivate the imaginations of children. Her books are used in educational settings to help introduce and explain mathematical principles to students in a fun and relatable way.