The geometry teaching in the Montessori method
The figures are there since a Casa das Crianças. It is foundational resource so that kids can learn the names and manipulate the countours. And Montessori explain that this helps with the hand and the intelligence. The exercises with the geometric figures prepares the child for writing. That is really great.
In The Advanced Montessori Method, the geometry teaching proceeds with other resources that teaches detailed subjects like the Pitágoras Theorem, and all of that with the resource manipulation.
The child concentrate, and, Montessori state that importance. Besides the knowledge, the foundation is on the child attention. The concentration is key for life. The process is great for learning.