Barbara Bratzel is a K-8 STEM teacher who consults at the Center for Engineering and Education Outreach at Tufts University. She has been a keynote speaker and workshop leader at LEGO robotics educational conferences around the world, and she’s the author of several robotics books for teachers, including Makerspace LEGO (College House Books).

Rob Torok teaches Computer Science, Mathematics, and Engineering Design at a senior secondary school in Tasmania. He has run robotics workshops for teachers and students, and consulted for LEGO Education Australia and the Center for Engineering and Education Outreach at Tufts University. He contributed a chapter to The LEGO MINDSTORMS NXT Idea Book (No Starch Press).