Device comprising an electronic unit, set comprising a device of this kind, associated use, and method for utilizing a set of this kind

A device for use as a tool for presentation and training in project or group work, the device comprising a housing comprising an interior, wherein the housing has at least three corners and at least three edges, which connect the corners to one another and border a surface segment, wherein cages are configured in the interior at least in each corner and/or at least in the edges and/or in grids adjacent to the surface segment, in each of which cages a permanent magnet is arranged in a captive and moveable manner, so that all the magnets can orient themselves, depending on polarization, wherein the housing comprises an electronic unit comprising a data memory, on which at least one ID number is electronically stored, a switch, which can be triggered by actuation by a user, and a transmitter connected to the switch and to the data memory, comprising antenna, which transmitter, when the switch is actuated, can wirelessly transmit at least the ID number to a controller and can trigger a further process, which assigns the device a meaning within the scope of the project or group work.