Three-dimensional representations of a landscape are ideal teaching material for geographically education. On one hand, they are easier to understand than maps, on the other hand, they are able to help comprehend the concept of contour lines in topographic maps. The training of geological understanding can be elevated by using type reliefs who show geomorphologic typically sites like a glacier with its moraines, a fjord or a volcanic island etc. But a terrain model also can make the pupils simply familiar with the surroundings of their place of domicile and the morphology of their country respectively.
It is also possible, to build a terrain model with pupils by its own. There exist a lot of easy techniques to create models .
 See for example Zurflüh, Hans. Das Relief. 1950.