The Constructive Triangles consists of five boxes each containing a variety of coloured triangle
pieces used to create different geometric shapes.  Most of the figures have a thick black line
printed along one or more sides so that the child can match these black edges with one another
and create different Triangle shapes

The purpose of this material is to introduce the child the concept that visual images may be combined to create different visual images.
Indirectly, to prepare the child for later work in Mathematics, by demonstrating the principle
that all plane geometric figures constructed with straight lines may be conceived as being composed of triangles. (Material is in Plywood Not MDF)