×

Educational teaching and self-correcting apparatus adaptable to a variety of subject matters

  • US 4,158,921 A
  • Filed: 09/08/1977
  • Issued: 06/26/1979
  • Est. Priority Date: 12/29/1971
  • Status: Expired due to Term
First Claim
Patent Images

1. Educational teaching apparatus comprising:

  • (a) at least one geometrical shaped block having a plurality of faces;

    (b) faces of said block having a visual presentation of subject matter thereon;

    (c) said faces being disposed in at least two sets of at least two successive faces in respectively different planes of rotation of said block;

    (d) said successive faces in each said set having some said visually presented subject matter thereon;

    (e) the presented subject matter on the said successive faces in one said set having a basic visually recognizable similarity but a different visual physical appearance;

    (f) the presented subject matter on the said successive faces in a second said set having a basic visually recognizable similarity but a different visual physical appearance;

    (g) the presented subject matter of each said set on a said block being specifically different from another said set thereon;

    (h) the presented subject matter on said successive faces of said set in each said plane of rotation of said block being similarly visually physically oriented, and differently visually physically oriented from that on the faces other than those of said successive faces in a given plane of rotation, and from the faces in a different said plane of rotation;

    (i) rotation of a said block solely in one of said planes of rotation visually presenting the subject matter on the said successive faces in similar physical orientation as an indication of the basic similarity of subject matter, and rotation of said block in a second different plane of rotation visually presenting the subject matter on the successive faces in the second different plane of rotation in a dissimilar physical orientation from that in the said one plane of rotation as an indication of non-similarity of subject matter with respect to that in said one plane of rotation;

    (j) rotation of a said block in a plane of rotation presenting a face thereon other than one of said successive faces in a said plane of rotation will visually present the subject matter on this other said face in a dissimilar physical orientation from that on the other faces in said plane of rotation as an indication of dissimilar subject matter.

View all claims
  • 0 Assignments
Timeline View
Assignment View
    ×
    ×