Tactile dominoes "Geometric shapes", "Figures".

This is a set of a set of compatible parts: 28 pieces with recesses and 28 pieces with protrusions. The dominoes are paired, with semi-circular elements in the form of compatible protrusions and recesses. It is possible to play: with chips only with protrusions or only with recesses; simultaneously with chips with protrusions and with chips with recesses; placing chips next to each other or putting them on each other, with visual control and "blindly", being oriented only on tactile perception. Comparing sets visually, by touch and overlapping method, counting to 6.