“The desire of the child to attain an end which he knows, leads him to correct himself.”
A clear goal can support self-correction because the learner can compare the result with the intended end and revise without waiting for every error to be externally identified.
Source details
Dr. Montessori's Own Handbook, discussion of self-correcting didactic material. Project Gutenberg #29635. Montessori immediately describes the child’s own intelligence, rather than the teacher, as detecting and correcting the error.