The sensory game of the second box of constructor triangles is useful for the discovery and knowledge of plane geometry. The triangles are called constructors because each triangle is used to construct other figures. All triangles are coloured blue. The box contains a pair of scalene right-angled triangles, a pair of isosceles triangles, a pair of equilateral right-angled triangles, a scalene octangular triangle, a scalene right-angled triangle. The game encourages the discovery of geometric shapes and helps to understand that all plane shapes are made up of two or more triangles, stimulates the ability to concentrate, refines sensory perception of sight and helps in the knowledge, classification and memorisation of the various figures.
Sensory material: made up of a set of objects "grouped according to a certain physical quality" - weight, temperature, size, shape, colour, sound, etc. - which are then used to create the sensory experience. - Refining the perception of each sense encourages exploration and knowledge. Age: from about four years. The box and the triangle builders are made entirely of birch wood. The triangles in the box are hand-painted in blue with environmentally friendly Luxens water-based paint, with "Ecolabel" certification. The triangle builders are useful for initiating the study of geometry, they educate the eye to shapes through active manipulation, they are useful for touch and sight education.