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This work is in German and set in Fractur. I do not speak German and Google Lens does not transcribe or translate Fractur well. Consequently, it is probable that there will be errors and omissions on this page. If anyone can supply corrections or further information to me I will be most grateful.

The work is a guide to the use of a series of very simple paperfolds to teach geometrical ideas in the kindergarten. The main sequence begins with the unfolded square and ends with the Double Blintz Basic Form (32 picture d below), at which point the author comments, roughly, 'We finally get the basic form ... from which one can learn the most varied forms of life and beauty ...' However no examples of such forms are given in the book.

The work also extends the range of Froebel's original Folds of Knowledge by showing how the square can be folded into other mathematical shapes, particularly concentrating on shapes that can be achieved by folding edges onto diagonal creases.

A few examples of these pages are given below. A full copy of the work can be accessed here.

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