An educational visual aid device for studying a subject such as grammar comprising of a front panel, a rear panel and a plurality of middle panels, all connected together in easily turn able manner, the front face of the said front panel and the rear face of the said rear panel printed with the contents of the subject contained inside the device, the matter for study or the information on the subject printed on inside surface of the front and rear panels and on the both the sides of the said middle panels, each of the said middle panel serially numbered at its bottom, preferably on a projecting out tab provided with each middle panel and a cut out grid indexing system formed by the said projecting out tabs used for instantly opening out the desired panel containing the required information.
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