Abstract: A room divider device is comprised of foam panels, supporting poles with extenders and hinges, horizontal tracks, and vertical joiners for creating wall to divide the floor space. The supporting poles are assembled with pole sections and extender accommodating height and slope of ceiling. The swivel hinges are allowing the dividers to be built according to variety of existing wall and ceiling configurations. The foam panels are laid down and connected with the interlocking parts of horizontal tracks and vertical joiners. The grooves on the panels fit to the extruded bars inside of tracks and maintain the position of the panels. The swivel hinges provide the options for connecting walls up to three with various angles from sixty to three hundred degrees. Two different sizes of panels are stacked alternately to build stable and strong walls.

Abstract: A mathematical game is comprised of a game board with holes arranged in a regular array and playing pieces bearing integer numbers. Players compete to combine the playing pieces and mathematical operations to form a mathematical expression which equals a given answer. Playing pieces used in these mathematical expressions are placed on the game board on the holes. After all holes are filled with playing pieces, playing pieces are stacked on top of the previous layer of pieces by putting the playing pieces into gaps created by the playing pieces of the lower level. More levels of playing pieces are assembled as the game progresses, creating a three-dimensional pyramid shape.

Abstract: An anti-skid tire guard has three main components. The first component is a pair of spaced strips of material, each of the strips comprising three slats connected end to end by hinge pins. The strips are maintained in spaced relation by a plurality of metal or plastic tread members having studs projecting from one surface thereof. The ends of both of the strips are provided with female connectors. A plurality of blanks comprise each tread member and are connected by wires which are attached to the hinges by adjacent slats forming the strips. The second component comprises two slats attached end to end by a hinge, the free ends of each of these slats comprising male connector members designed to securely fit within the female members. A tread member similar to those used in the first component is provided, which is attached to the hinged portion between the two slats at one end and which has a hook at its other end.