According to Piaget's theory, what stage describes infants knowing the world through sensory impressions and physical activities?

The sensorimotor stage is the first phase in Piaget's theory of cognitive development, which occurs from birth to approximately two years of age. In this stage, infants primarily learn about their environment through their senses and motor activities. They begin to understand the world by physically interacting with it—grasping objects, moving about, and exploring their surroundings.

During this period, infants develop object permanence, which is the understanding that objects continue to exist even when they are not in sight. This marks a significant cognitive development milestone. The emphasis on sensory perception and motor actions is what defines this stage, as infants continuously learn through their direct experiences rather than through abstract reasoning or symbolic thought, which are characteristics of later stages.