Barbara Bratzel has been a teacher of science and mathematics for more than twenty years, teaching every age from kindergarten through high school. She currently teaches at the Shady Hill School in Cambridge, Massachusetts. She is the author of Physics by Design (College House Books, 2005, 2007; Mindstorms software edition to be published Summer 2009), an activity book for science teachers, which uses LEGO Mindstorms to teach physics and engineering.