The book is based on the experience of working with students in grades 3-11. The materials are optimized for self-study and for robotics classes in educational institutions. The programming of mobile robots on the Arduino platform in Scratch-like visual environments mBlock, MindPlus and Snap4arduino is considered. The creation of more than 30 game and educational projects in two modes is described: interactive and autonomous. The complexity of projects is growing from introductory, for primary school students, to competitive. The problems of orientation and navigation of the robot using line sensors, a gyroscope and a rotary head with ultrasonic and infrared range finders and other projects are considered. Examples of simulation projects that do not require a real robot are given.