The invention refers to the educative and developing trainers. Operation concept of the trainer is based on modules, that is, spatial compositions are formed of cubic modules with certain dimensional characteristics and a proportional ratio of sides of a boy, a girl, a cactus and a dog. A module is made in such a way that consists of projections and recesses. The projections of one module are inserted into the recesses of another module, and the projections of the same module are placed in the recesses of another module. At this, various projections of another module can be inserted into different recesses of one module, and various projections of one module can be inserted into the recesses of another module. Modules in the same composition can be positioned both horizontally and vertically, can be positioned relative to each other not only in the correct position, but also in an inverted position, as well as in lateral plane. Proportions of the figures-modules must be such ones that when their different parts are combined, they fit tightly together, regardless of which parts of the figure-module must be connected. Various elements of the modules can be combined in any options and sequences during creation of a spatial composition. All types of module shapes can be used both independently and jointly. The model line of such figures can be expanded subject to the requirements for proportions being met.