The proposed manual contains material that covers the entire 1st grade math course. By studying just 10 minutes a day, a little student can become a "math prodigy" in the eyes of teachers and classmates. Bright pictures, visualization of tasks, extensive reference information, and an original reward system make the lessons highly effective. The simulator has three modes of operation: 'Study', 'Self-check' and 'Knowledge Control', which allows you to objectively assess the success of the schoolchild in mastering the selected topic (the assessment is made by the computer). The simulator is designed taking into account the age peculiarities of elementary school students and complying with sanitary requirements when working on a computer. Changing the size of the simulator's working field makes it possible to use it both on an ordinary computer for individual training and in the classroom when using an electronic interactive whiteboard.