This article examines the life of Friedrich Froebel, the founder of the kindergarten in the 1840s. It describes how the kindergarten and its impact in Germany and the United States. It spread at the international level of education because German kindergarten teachers relocated it to other countries when it was banned in Germany. In the years from…

The following paper continues the previous part, and examines the influence of crystallography on Fröbel's conception of mathematics. In this part we focus on yet unpublished material. These unpublished notes of Fröbel underline the visual transfer of drawing and images of crystals, mainly developed by Haüy, which were widespread at the turn of…

Friedrich Fröbel is known as the founder of the modern kindergarten and for his development of novel learning materials called Gifts and Occupations. One of the foci of Fröbel's programme was mathematical education, which he addressed and taught through various activities that encouraged the largely implicit transmission of mathematical…