A system for determining information regarding at least one object, comprising: a sensor sensitive to capacitive coupling; at least one object adapted to create a capacitive coupling with the sensor when at least one signal is input to the sensor; a detector adapted to measure at least one output signal of said sensor associated with the at least one object, wherein the output signal associated with the at least one object is an object information code.

The present invention relates to a dynamic three-dimensional teaching aid that allows for alphabet teaching or storytelling for infants or children in diversified manners by dynamic movement of a teaching member with teaching content when the teaching member is moved, thereby stimulating indefinite curiosity and imagination of infants and children, meeting their learning ability, arousing interest not to be bored and to appear novel despite repeated use, and letting them actively participate in and focus on learning and that has a simplified structure, is easy to manipulate, and is accurately controllable for its movement. More specifically, the dynamic three-dimensional teaching aid is configured so that a first magnet 23 is moved under a teaching board 1 by a control rod 2, and a moving block 3 coupled with a teaching member 4 is placed, which includes an attractive force element to be attracted by the first magnet 23 and a second magnet 32, on a side of the attractive force element, to exert a repulsive force to the first magnet 23 to be rotated depending on changes in the moving direction.