Pythagorean Theorem for Babies by Chris Ferrie

Chris Ferrie is an award-winning physicist and Senior Lecturer for Quantum Software and Information at the University of Technology Sydney. He has a Masters in applied mathematics, BMath in mathematical physics and a PhD in applied mathematics. He lives in Australia with his wife and children.
Lizzy Doyle is a designer, illustrator, and author from New Jersey. She is the creator and owner of Lizzy Dee Studio where she uses her children's publishing experience and her love for all things smiley to design books, craft kits, and paper goods. Her design mind gives an edge in the illustration market where she loves creating cute characters, patterns for apparel & decor, and illustrations for licensing! Lizzy is also an avid collector of oddities & antiques, a WFMU fanatic, and you'll never see her without tea in hand.