 TOTOS IT is a platform for developing educational materials and providing them in a centralized web-oriented environment. The platform uses existing graph generators and graph visualizers to systemize and classify large amounts of data. It also provides a centralized web-oriented learning environment, allowing users to access educational materials from any device. Additionally, the platform utilizes a centralized web-oriented environment based on ontology 4, which fills, adapts, and provides educational services with information resources that reflect the conceptual system of a particular discipline. One example of how this system can be applied is in teaching biology, chemistry, Ukrainian language and literature, and other subjects using the STEM approach. This article was authored by Viktor Bechapavlov, Yavinia Bechapavlov, Zhanna Ibilik and others.