Keyword: «didactic tool»

Solving a problem is an interesting, somewhat unusual job, that is, mental work. This article provides some methodological recommendations and a number of theoretical and logical foundations without which it is impossible to solve problems correctly.

The article addresses the problem of developing spatial thinking in 10th–11th grade students studying stereometry and substantiates the use of interactive 3D models as a didactic tool. The author presents a developed interactive web-textbook on stereometry featuring six types of tasks with dynamic 3D models: figure rotation, parameter sliders, a cross-section construction trainer, tasks on the relative position of lines and planes, animation of solids of revolution formation, and quizzes with instant feedback. The results of a pedagogical experiment conducted in two parallel 10th-grade classes are described, demonstrating an improvement in the quality of solving stereometric problems in the experimental group.