Who is the founder of the kindergarten (play-way) system?

→ Rashi is physically inactive. She may have: → Under Maria Montessori's child-centered educational philosophy, what is the most authentic and scientifically valid psychological implication regarding the concept of the 'Prepared Environment'—defined as a well-organized, aesthetically pleasing, and scientifically structured physical and psychological classroom environment where every object is arranged according to the child's developmental needs, age-appropriate sensory materials, and psychological freedom, allowing learners to independently acquire knowledge through intrinsic motivation, self-directed exploration, and self-correction without external adult interference? → Who is the proponent of the Sentence Completion Test method? → Who is considered the father of the cognitive movement? → Who is the founder of the Kindergarten method? → Who is the proponent of the Montessori method?