Integrated Development Model for Preschool Children in Small Groups: The Roles of Sleep, Physical Activity (Rhythmics & Sport), Relaxation, Nutrition, and Parent–School Collaboration for Measurable Progress Across 10 Development Domains within a Montessori–Kumon–Inspired STEAM & Sensory Framework in a Multilingual, Multicultural Large-City Context. Implementation–Observational Preprint: Kinder Academy Daycare (Chicago, USA). | Synapse