Rolf Fraedrich (academically qualified educationalist * teacher)

Geometrical steelmodels for school

Years ago I invented special geometrical steelmodels for the subject mathematics in school. The following pictures may give You an idea of the 17 steelmodels´ shape. They were to be bought in a specialised shop for about 20 years. If someone is interested in a new fabrication of them anywhere on the world, please let me know.