Abstract: A walled structure apparatus generally orientated perpendicular to a horizontal surface, the apparatus including a first panel with a major plane, a corner and a notch, a second panel with a major plane, a corner and a tab received with the notch, and a hinge structure within the notch. The hinge structure generally uniting the panels for movement to a number of selected positions and includes interengaged flexible components permitting inward and outward movement and being generally located within the notch and tab. Through this movement, the walled structure apparatus exhibits a deformed structure.

Abstract: A child's toy comprised of a planar scaled wall panel with connective elements. The wall panel is formed of a planar section of solid material (10) and has a connecting arm (11) with a connecting element (12) at the top corner of one end. A notched void (13) with a receiving element (14) is located at the top corner opposite of the connecting arm. When it is used with other like wall panels the construction resembles three-dimensional walls of scaled buildings. The connecting elements when attached together allow resistive rotation simulating plastic deformation of building joints and allowing observation of collapse and partial collapse of the construction.