On May 23, 2024 at the HMCDC teacher Sarsenbaeva Ainash Bulatovna held an open lesson on «Truncated cone and its elements» in the group ChS-12G.

The group was divided into two subgroups. Presentations and practical tasks were used in the process of studying a new topic. To consolidate the new material, the method of pair work was used, while the students showed organization and discipline.