Dr. Jon Woodcock has a degree in physics from the University of Oxford and a PhD in computational astrophysics from the University of London. He started coding at the age of eight and has programmed all kinds of computers, from single-chip microcontrollers to world-class supercomputers. His many projects include giant space simulations, research in high-tech companies, and intelligent robots made from junk. Jon has a passion for science and technology education, giving talks on space and running computer programming clubs in schools. He has worked on numerous science and technology books as a contributor and consultant, including DK's How Cool Stuff Works and Help Your Kids with Computer Coding. Kiki Prottsman is Education Program Manager at Code.org and a former computer science instructor at the University of Oregon. As a champion for responsible computing and equity in both CS employment and education, Kiki works with many organizations to improve the experience of girls and women in STEM. She currently sits on the Advisory Board for Wonder Workshop Robotics, and is a member of the Leadership team for the Oregon Girls Collaborative Project. Kiki is based in Eugene, Oregon.