Mordechai (Moti) Ben-Ari is an emeritus professor in the Department of Science Teaching of the Weizmann Institute of Science. He holds a PhD degree in mathematics and computer science from the Tel Aviv University. His research interests include program animation, logic in computer science, computer science education, and educational robotics. He has published many textbooks including Mathematical Logic for Computer Science, Elements of Robotics, and Mathematical Surprises. Ben-Ari received the ACM/SIGCSE Award for Outstanding Contributions to Computer Science Education and the ACM Karl V. Karlstrom Outstanding Educator Award.