Between early play and academic success lies a hidden foundation: sensory motor development. Most parents don’t realize that trouble with handwriting, focus, or even STEM learning often begins with missed milestones and retained reflexes. That’s why occupational therapy isn’t just about therapy — it’s early intervention neuroscience. This Play-Doh letter activity? It’s building brain maps, motor memory, and emotional regulation — all critical for future STEM success. We fill the gap between play