Related milestones
Explores and examines an object using both hands and mouth
By 9 Months

Experiments with the amount of force needed to pick up different objects
By 9 Months

Investigates shapes, sizes, and textures of toys and surroundings
By 9 Months

Observes environment from a variety of positions – while lying on back or tummy, sitting, crawling, and standing with assistance
By 9 Months
