Laminar plate-holder, with response data, masked, easy to reveal, suitable for didactic, entertainment, or similar purposes, essentially characterized by a laminar template or support, perimeter configuration and convenient dimensions, which in one or on its two faces it is advantageously divided, horizontally and vertically, into a plurality of adjacent or not square spaces, of varying amplitude, generally rectangular oblong, distributed according to a series of parallel bands or bands, defining a series of bands or parallel fringes, defining a series of equivalent grids, organized in columns, appearing in one of the columns, appearing in one of the lateral columns a series of signs constituting several questions or propositions referring to a certain theme, graphics or drawings of nature versa, identified in any case, each one of them, with a numerical, ordinal, geometric sign trico or alphabetical, while in the extreme column coinciding in alignment, next to the opposite side, a series of signs appear, as a response or solution, with reference to the question posed, one corresponding to each stripe, in such a way that said last vertical row of data is hidden by superposition of a special ink film as a rectangular strip, or in the form of discontinuous zones of variable geometry, of uniform coloring, or varied, of such characteristics as to completely hide the vision of said numerical characters or signs, as long as they are immediately visible by simply adding liquid, water, saliva or similar, to the cover film. (Machine-translation by Google Translate, not legally binding)
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