A system for building a load bearing structure for supporting a compressive load, the system including a plurality of wooden members; wherein a protrusion of a second member is locatable within a recess of a first or third member to interconnect the first and second or third and second members together to form the loading bearing structure, wherein the protrusion is not rotatable within the recess, and; wherein the third member has a recess with a depth greater than the height of the protrusion of the second member such that a cavity is formed between an upper inner wall of the third member and a top portion of the protrusion of the second member when the second and third members are interconnected.

The invention describes a new constructor module with the additive aspects of sound and dynamic construction. A base block is provided with varying mating elements for adjustably connecting structural blocks and plates together with sounding elements. A plurality of base blocks may be constructed based on desired output in various shapes and structures. The base blocks are coupled together with connecting elements and fixing pins, which also assist in coupling the sounding elements. Additional plates are also utilized for creating dynamic sounds and structures, including D-shaped plates and U-shaped plates. Constructor set modules may utilize all such elements in a plurality of structures, or at minimum, only base blocks, connecting elements, a sounding element, and fixing pins.

A method for and system for guiding a user in creating a craft. At least a portion of a selected crafting challenge is displayed on a portion of a display surface which is visible through a crafting surface. A composite guide element is shown on the display surface visible next to the display surface part which is visible through the specific crafting surface and a further composite guide element is also provided at a receptacle corresponding to the displayed composite guide element. It is ensured that the composite guide element and the further composite guide element provide at least two mutually independent instruction components.

Components may be used to build a three-dimensional (3-D) model. The components can include supports and connectors. A subset of components can be selected based on the 3-D model. The subset of components can be used to build the 3-D model.

Components may be used to build a three-dimensional (3-D) model. The components can include supports and connectors. A subset of components can be selected based on the 3-D model. The subset of components can be used to build the 3-D model.

A block may comprise a base comprising a first block side comprising a first side plane and a connective protrusion coupled to the base and extending distally outwardly and substantially perpendicularly from the first side plane. The connective protrusion may comprise a center pillar coupled to the base extending distally outward from the first side plane, a base portion coupled to the center pillar and the base and extending axially and substantially perpendicularly from the center pillar in a first direction, and an overhang portion coupled to the center pillar extending axially and substantially perpendicularly from the center pillar in a second direction opposite the first direction such that there is an overhang space between the first side plane and the overhang portion. The block may further comprise additional connective protrusions, and the connective protrusions of multiple blocks may enable the coupling of such blocks.

A block may comprise a base comprising a first block side comprising a first side plane and a connective protrusion coupled to the base and extending distally outwardly and substantially perpendicularly from the first side plane. The connective protrusion may comprise a center pillar coupled to the base extending distally outward from the first side plane, a base portion coupled to the center pillar and the base and extending axially and substantially perpendicularly from the center pillar in a first direction, and an overhang portion coupled to the center pillar extending axially and substantially perpendicularly from the center pillar in a second direction opposite the first direction such that there is an overhang space between the first side plane and the overhang portion. The block may further comprise additional connective protrusions, and the connective protrusions of multiple blocks may enable the coupling of such blocks.

Disclosed herein is a toy building unit for playing capable of folding from a flat position into a three-dimensional hollow position.

Embodiments of the present disclosure may include a method including assembling at least two building elements together. Embodiments may also include applying a stimulus to at least one of the at least two building elements, the stimulus being capable of changing a color of at least a portion of the one of the at least two building elements. In some embodiments, the at least two building elements may be assembled together prior to applying the stimulus.

The application relates to a field of object connection and in particular, relates to a basic connecting block and a connecting block group. The basic connecting block includes a connecting block body, wherein at least one protrusion corner is provided on one side of the connecting block body and same number of inward recesses as the protrusion corner are provided on an opposite side of the connecting block body, and wherein a surface contour of the protrusion corner is consistent with that of the inward recess, the protrusion corners are connected with each other and the inward recesses are communicated with each other.