Digital educational resources allow the teacher to diversify the learning process, increase the efficiency of self-study and quick control.

Considering the topic "Building a quadratic function": This topic is presented in the form of a demo video. Information for investigation of theoretical foundations of the topic, then the module can be used for explanation of new material to increase the visibility of the educational process. At this stage of the lesson, the teacher acts as a tutor. During the resource demonstration, the teacher comments on each part of the video and answers students' questions. Moreover, this module can be attached to an electronic diary for self-study.

The practical module consists of five tasks. Tasks are aimed at mastering the concept of "angular coefficient" and forming skills to calculate the coordinates of the intersection point of lines and determine the relative position of graphs of linear functions depending on their coefficients. By solving tasks, students are given the opportunity to use hints. All tasks in this training module are parameterized. This allows to create individual tasks for each student. The practical module can be used as a homework assignment for fixing this topic. The task can be attached to an electronic diary for each student. Students work with the module independent, and the teacher's help is not required. The control module consists of five tasks also. Tasks are aimed at checking students 'understanding of the concept of "angular coefficient" and the conditions under which graphs of linear functions are parallel or intersect, as well as checking their ability to find points of intersection of graphs. Many options from theoretical part are available also. Control can be performed by dividing the class into two groups. A group of strong students performs module tasks at their computers on-line, and the second group analyzes the tasks of the practical module together with the teacher using the blackboard screen. After a while, the teacher investigates the statistics page and gives the final grades to this group. The second group of students sits at the computers and performs the same module, and the first group is given tasks of increased complexity with writing in a notebook. The second group is evaluated in the same way.