How to Raise a Smart Baby: Month-by-Month Breakdown. Smart babies aren’t born, they’re raised through connection, play, and everyday exploration. From responding to cries in the newborn stage, to tummy time that builds brain-body strength, to peekaboo and sensory play that teach memory and problem-solving, every stage of the first year shapes intelligence. Reading simple books, naming objects, and encouraging babbles all wire the brain for language. Offering toys that stack, bang, and build caus