Educational means and method

Claim 1

EDUCATIONAL MEANS FOR FACILITATING THE TEACHING OF A SUBJECT, COMPRISING A SHEET HAVING PROVIDED THEREON VISIBLE PRINTED TEXT MATERIAL RELATING TO THE SUBJECT BEING TAUGHT, AND ADJACENTLY POSITIONED ON SAID SHEET TO SUCH TEXT MATERIAL A SECTION HAVING HIDDEN THEREIN PRINTED MATERIAL CORROBORATIVE OF SUCH VISIBLE TEXT, SAID SECTION BEING A COMPOSITE OF TWO DIFFERENT COLORED INKS AND CONSTITUTING A MOTTLED DESIGN IN RED INK DISPOSED AGAINST A BACKGROUND OF CONTRASTING COLOR AND HAVING EMBOIDED WITHIN THE AREA THEREOF AND CORROBORATIVE MATERIAL PRINTED IN A TURQUOISE COLORED INK, SAID MOTTLED DESIGN BEING OFF SUFFICIENT INTRICACY TO RENDER IN DIFFICULT TO INTERPRET THE COROBORATIVE MATERIAL WITH THE NAKED EYE, SAID MOTTLED DESIGN AND SAID CORROBORATIVE MATERIAL BEING IN OVERLYING RELATION AND BOTH APPEARING TO THE HUMAN EYE AS A UNITARY DESIGN IN WHICH BOTH ARE VISIBLE BUT NOT READILY DISTINGUISHABLE FROM EACH OTHER, AND BOTH BEING PERMANENTLY MOUNTED ON SUCH SHEET TO BE USED REPEATEDLY AS SUCH UNITARY DESIGN IN CONNECTION WITH THE REPEATED USE OF SAID VISIBLE PRINTED IN MATERIAL, AND THE INK OF THE OVERLYING PRINTED MATEIAL IN SAID SECTION BEING A TRANSPARENT INK, AND A VIEWER FOR SCANNING SAID SECTION AND COMPRISING A TRANSPARENT SHEET OF RED COLOR SUCH THAT WHEN SUCH SECTION IS VIEWED THERETHROUGH THE CONTRAST OF THE RED INK WITH SAID BACKGROUND IS MATERIALLY REDUCED, AND THE PRESENCE OF THE TURQUOISE INK OF SAID CORROBORATIVE MATERIAL IS ENHANCED SO THAT SUCH CORROBORATIVE MATERIAL CAN BE CLEARLY READ BY THE READER.