An interlocking toy building block includes a first block body and a first magnet positioned therein a first distance from a first outer surface thereof to provide a first predetermined magnetic polarity to the first outer surface. When the first outer surface is brought into close proximity with a second outer surface of a second block body having a second magnet positioned a second distance therein and exhibiting a second predetermined magnetic polarity opposing the first predetermined magnetic polarity, the first outer surface is configured to mate with the second outer surface in an interlocking position. A potential magnetic force F.sub.m between the pair of magnets is determined by the formulation: F.sub.m=F.sub.o e.sup.−rd where F.sub.o is the initial force (i.e., no separation distance between magnets), and e.sup.−rd is the exponential function of the rate of decay “r” of the magnets and the distance “d” between the magnets.

Electrical connectors, electrical modules, and systems are provided. In one aspect, an electrical connector includes a housing defining a side surface, an electrical conductor supported by the housing and including an engagement portion proximate the side surface of the housing. The engagement portion is adapted to engage another electrical conductor of another electrical connector. The connector also includes a magnet supported by the housing proximate the side surface of the housing, a projection extending from the side surface of the housing, and a receptacle defined in the side surface of the housing. In other aspects, an electrical module includes at least one of these electrical connectors. In further aspects, a system includes a plurality of these modules and the modules are selectively couplable together.

A flexible building segment includes a first outer-section, a second outer-section, a central-section, a first ribs-section and a second ribs-section. The first outer-section includes a first magnet embedded therein. The second outer-section includes a second magnet embedded therein. The central-section includes a central magnet embedded therein and at least two central attachment slots at opposite sides thereof. The first ribs-section includes a first flexible portion and respective ribs. The first flexible portion couples the central-section with the first outer-section. The ribs, respective of the first ribs-section, are attached to the first flexible portion and parallel to each other. The second ribs-section includes a second flexible portion and respective ribs. The first flexible portion couples the central-section with the second outer-section. The ribs, respective of the second ribs-section, are attached to the second flexible portion and parallel to each other.

Building blocks for making structures comprising a number of translucent inflatable blocks, wherein each translucent inflatable block has six identical sides having an outer surface, an inner surface, and four vertices; a magnetic connection element configured to connected at least two inflatable blocks of the number of translucent blocks, wherein the magnetic connection element is located on the inner surface of each of the six identical sides, wherein the magnetic connection element includes four corners, wherein the four corners are equidistant to the four vertices; a proximity switch in communication with a lighting element located on the inner surface of each of the six identical sides, wherein the lighting element is configured to emit colored light when the proximity switch is activated, wherein the proximity switch is activated when the inflatable blocks are connected via their respective magnetic connection elements; and at least one valve for inflating or deflating the inflatable blocks.

A magnetic wooden block toy configured to provide improved magnetic force between magnetic wooden blocks is provided. The magnetic wooden block toy includes a wooden body and at least one magnet casing embedded therein. The magnet casing includes a casing body, a flange having a sloped inner surface, and a top opening defined by the sloped inner surface. The magnet casing contains at least one magnet.

A magnetically connected toy block comprises a toy block body (10), a magnet fixing sleeve (20), and a magnet. The toy block body (10) is provided with a sleeve pipe (11) with an opening at the upper end, and the magnet fixing sleeve (20) is fixed in the sleeve pipe (11). The upper side and the lower side of the magnet fixing sleeve (20) are respectively provided with a slot (21) and a socket (22), the slot (21) is located on the outer side of the sleeve pipe (11), and the socket (22) is located on the inner side of the sleeve pipe (11). The upper end of the slot (21) is closed, and an opening is formed on the lateral face of the slot (21). The magnet comprises a first magnet (31) and a second magnet (32), the first magnet (31) is disposed in the slot (21), the second magnet (32) is disposed in the socket (22), and the polarity directions of the first magnet (31) and the second magnet (32) are the same. Mounting of a magnet enables a toy block to be firmer, and the toy block can he used more safely.

Pseudo magnetic monopoles made from a plurality of building blocks, each having one outer surface that is substantially a north magnetic pole and an opposing outer surface that is substantially a south magnetic pole. The building blocks are assembled to form a hollow object having an inner surface and an outer surface, with all of the north or south poles of the building blocks facing outwardly, such that entire outer surface of the object is substantially either north or south. The building blocks may be magnetized before or after they are assembled to form the hollow object. The hollow object may be a sphere. The building blocks may have tapered side surfaces to minimize gaps between the building blocks when they are assembled to form the hollow object. A plurality of the objects may be provided in kit form as a teaching tool.

Construction toy, characterised in that it primarily consists of a set of construction elements of rods (1) with magnetic ends, balls (2) and one or more preformed attachments (15) that can be suitably affixed to the rods (1), and which to this end have a fastening clip (18) with arms (19) of an elastic material that have at least one rib on each of the sides facing one another, whereby the rods have a primarily octagonal cross-section with diagonally opposite sides (8) that are linked together by other diametrically opposite sides (9) that each have a groove (10) in which the aforementioned ribs (21) can snap in place.

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.

A construction unit may have a main body formed from a flexible material. The main body may have a first side and a second side. The construction unit may have a plurality of magnetic connectors attached to the main body. A kit for construction of a structure may have a plurality of construction units, at least one flexible link, at least one active unit, and at least one control unit. A method of making a structure includes a first step of providing a plurality of construction units. There is second step of connecting at least one of the magnetic connectors of a first one of the construction units with at least one of another one of the magnetic connectors of the first one of the construction units, and at least one of the magnetic connectors of a second one of the construction units, whereby the structure is formed.