Neurons grow and develop through sensory experience and environmental enrichment. As neurons are stimulated, synapses and dendrites grow stronger and larger, laying the foundation for lifelong learning. Axons also develop a protective myelin sheath that makes chemical transmission more efficient, though myelination takes many years and progresses from lower to higher brain structures. For optimal brain development, children need active, physical interaction with their environment rather than just passive visual experience. Building synapses and dendrites requires exercising both hemispheres through holistic and analytic activities from an early age. Brains develop best when children pursue challenges through play and problem-solving rather than passive media consumption.