Sensorimotor Activities that involve learning through movement and the senses and include physical reflexes and cognitive skills. The first stage of their development is referred to as the sensorimotor stage. This stage begins at birth and lasts through 24 months of age.
After an infant has reached the age of 24 months, he or she moves into the pre-operational stage, which is from 24 months old through the age of 7. When the child reaches the age of 7, he or she enters the concrete operational stage, which spans from 7 to 12 years old. When a child hits the age of adolescence, he or she moves into the final stage of development, known as the formal operational stage, which spans adolescence through adulthood.