Interlocking geometric shapes - triangles

The Interlocking geometric shapes - triangle consists of a rectangular board, with 'soft' rounded corners, containing three slots and their three equilateral triangles, hand-painted in yellow, graduated from large to small. The slots are equipped with a knob to facilitate gripping and manipulation and to facilitate proper finger movement, useful for initiation into writing. Being able to observe and touch the shapes stimulates the tactile-muscular sense and helps the memory and the eye in the perception of shape and size. Playing, allowing self-correction, stimulates the exercise of motor skills; finding the right position for each piece encourages the development of attention and concentration.