Toy construction members

A toy construction set comprising a plurality of members, each of said members comprising a unitary frame of open polygonal shape having outer peripheral planar edge surfaces and a planar cover member for sheathing the open side of said frame, said frame having two parallel rows of continuously alternating tabs and recesses located substantially along the center line of at least one of said edge surfaces, each of said rows comprising a plurality of adjacent alternating tabs raised perpendicularly from the plane of said edge surface and recesses conformed in depth to said tabs, said tabs and recesses being respectively below and over the plane defining said edge surface and being mutually conformed trapezoids of the same height and width with the tabs tapering inwardly in the outward direction at an angle of 45.degree., the tabs of one row being offset relative to the tabs of the other row by a distance equal to one of said tabs or recesses whereby two or more of said frames may be interconnected with the tabs and recesses of one interengaging with the conforming recesses and tabs of the other and the planar surfaces of the corresponding peripheral edges in abutment, said cover member being provided with tabs are recesses on its surface which are adapted to interconnect with the tabs and recesses of said frames.