A numerical operation system for a plurality of individuals includes a contactless communication tag each included in a plurality of individuals, a reader allowed to read the contactless communication tag, and a control unit to which a result read by the reader is input, wherein the control unit is configured such as to acquire, from the result read by the reader, at least numerical values each corresponding to the plurality of individuals and operator symbols for operating the numerical values to calculate a total value based on the numerical values and the operator symbols.

Disclosed is a magnetic building block, including: a bearing body, magnetic bodies, and a retaining body, the bearing body including a sealing member and a bearing member which forms first cavities with the retaining body, the magnetic bodies being located in the first cavities and attracting adjacent external products, to form different shapes; the retaining body is in contact with the magnetic bodies to secure the same. The bearing body, the magnetic bodies, and the retaining body match for use, and the magnetic bodies are relatively fixed in an accommodation cavity through the retaining body and can be magnetically connected to the external products, such that when stacking multiple magnetic building block, different magnetic building blocks can be spliced in different surfaces and further be spliced in a suspension manner, thereby reducing a process of stacking multiple building blocks, providing convenience, and further realizing diversified splicing and meeting users' requirements.

A magnetic toy construction block includes an inner shell and an outer shell which are arranged to form a module having a shell-within-a-shell construction. Disc-shaped magnets are rotatably received and maintained in pockets formed in the inner shell of the module. The inner shell is permanently housed within the outer shell such that the magnets lie in close proximity to its sidewalls and hence sidewalls of the module itself.

A magnetic attraction connection structure includes a main body. The main body has a peripheral edge on which at least one connection surface is defined. The main body is provided with at least one movement space in an interior of the peripheral edge at one side of the connection surface. The movement space is provided with a magnet arranged in an interior thereof. The movement space is of a size that is sufficient to allow the magnet to move in a direction toward the connection surface or to rotate by an angle. In use, the connection surface of the main body is placed in direct contact with another main body at the location corresponding to the magnets, such that the magnets arranged in the two movement spaces automatically move or rotate due to magnetic attraction of opposite magnetic polarities, so as to securely fix the main bodies together.

A system of stacking interlocking blocks can be configured into a series of states in order to capture and display both physical and virtual events or content. In some examples, the system includes the stacking interlocking blocks, a grid base having the stacking interlocking blocks stacked on top of the grid base in a physical configuration, and a user system. Each stacking interlocking block includes a block circuit. The grid base includes an embedded computing system configured, by virtue of communicating with each of the block circuits, to determine a position of each stacking interlocking block with respect to the grid base and in some cases both the grid base and the other blocks which have been detected by the grid base.

In some embodiments, an apparatus includes a first connector including a first housing portion having top and bottom surfaces and a second connector including a second housing portion having top and bottom surfaces. The second housing portion has a form factor substantially corresponding to a form factor of the first housing portion. A circuit board having top and bottom surfaces is permanently coupled to the first housing portion and to the second housing portion such that a first portion of the bottom surface of the circuit board contacts at least a portion of the top surface of the first housing portion and a second portion of the bottom surface of the circuit board contacts at least a portion of the top surface of the second housing portion. A contact assembly is coupled to the first housing portion and electrically and directly engages a portion of the bottom surface of the circuit board.

The present disclosure provides a modeling apparatus having a plurality of modeling devices, each having a generally tetrahedron shape having four faces with an interface element attached to each face. Each interface element cane b removably and rotatably coupled to an interface element of an adjacent modeling device. A combination of modeling devices are selectively couplable to form a variety of structures such as molecular, architectural, artistic, dynamic, and/or any other suitable model. The interface elements can include magnets with distinct or identical polarities, and with selective strengths to emulate the target structure or assembly attributes. They can also be iron or a neutral material such as aluminum. The vertices of the modeling apparatus include a curvilinear boundary tracing a spherical periphery of a sphere having a radius extending from a center point of the tetrahedral shape to a midpoint of an edge thereof.

A system for building a play area can include two or more panels, each of the two or more panels including a connector and at least one magnet positioned in the connector such that the at least one magnet is able to rotate, the at least one magnet including first and second magnets housed in respective first and second ends of the connector, the at least one magnet including at least one cylindrical magnet, the at least one cylindrical magnet being diametrically magnetized; and first and second dowels connected by the connector; each of the two or more panels being configured such that when at least one edge of each of the first and second panels are brought towards each other from any direction, the at least one magnet in each panel orientates such that a magnetic connection is formed between the two or more panels.

An electrical construction toy system is comprised of one or more base pieces and building blocks. At least one of the base pieces or building blocks providing a power source within the base piece or building block. The connection between base pieces and building blocks does not have to be mechanical, but can be magnetic as well. The connection between base pieces and building blocks further provides an electrical connection from which the power source may pass energy to one or more additional building blocks in varying directions. The connections conduct electricity and some building blocks or base pieces also provide powered effects, such as lighting, sound, and motion effects. In addition, there are several switch blocks to operate the lighting, sound, and motion by a wireless remote control.

The present disclosure discloses a polyhedral magnetic toy brick and a combined structure. A polyhedral magnetic toy brick includes an inner-layer assembly, at least two magnets and an outer skin assembly. The inner-layer assembly includes several board bodies folded to form the inner-layer assembly. The board bodies include at least one triangular magnetic face; two magnet mounting holes are formed in the magnetic face. One magnet is mounted in each magnet mounting hole, and the two magnets on the same magnetic face have opposite outward magnetisms. The outer skin assembly wraps an outer surface of the inner-layer assembly, so that the magnets can be stably fixed on the board body and is avoided from being separated or moving relative to the board body, the board bodies with different shapes are connected, and are combined stably. Meanwhile, the possibility and diversification of constructing models are further achieved.