1. Technical field to which the design described in the claims belongs;A book with a hint;2. The technical point that the design is trying to solve.;The idea is to have a screen between the bookmarks so that the problem, the commentary, the hint and the correct answer on the side of the book are recorded, but it is not easy for the examinee to see it, It is an object of the present invention to provide a book with a hint screen maximizing the efficiency of learning.;3. The point of solution of design;The present invention relates to an image forming apparatus comprising: a plurality of sheet portions containing predetermined contents; A coil spring to which one side of the sheet portions is bound; First and second section sections for separately dividing the surface of the seat section by a problem and the commentary, hint and correct answer corresponding to the problem; And a hinge cover which is fitted on the hinge cover so as to be pivotally mounted on the hinge cover so as to cover the section of the first and second section portions, the solution of which is enclosed by the solution.;4. Important Uses of Designs;This design is to improve the efficiency of learning without hindrance to examinees by using hint screen.
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