If you have/know any kids learning or struggling with ratios then this is the book for them. Here's a excerpt of a review from the School Library Journal:
"Gr 4–7—This picture-book introduction to ratio and proportion also explains the connection between math and music through a story featuring young Pythagoras and his family......."
".......The story is amusing and offers a glimpse into life in ancient Greece. Acrylic and colored pencil cartoons depict the clothing and lifestyle of the period in a pleasing palette. A historical note and an experiment in which readers are challenged to use Pythagorean ratios to create a musical instrument with six glasses of water in varying amounts are appended.—Barbara Auerbach, PS 217, Brooklyn, NY"