Own book for collective school education (Machine-translation by Google Translate, not legally binding)

摘要

A book system, large, suitable for collective school teaching, which essentially consists of a series of sheets linked together by their upper part provided each one of them on one side of a drawing, engraving, outline , map or any other graphic element, whose explanation appears on the back side of the sheet that precedes it in the book itself, so that it is placed on an appropriate easel or lectern, that is, on two sides, in one of them they are exposed to a group of schoolchildren and in a successive way the graphic reproductions that the book itself contains, while on the other side, the text corresponding to the sheet, simultaneously exposed with said text, is visible. (Machine-translation by Google Translate, not legally binding)