He'll delight in reaching out and grabbing them to put in his mouth. While lying on his stomach, your baby will learn that he can crane his neck to see what's going on around him. He can hold his head steady when sitting upright. Baby can raise his chest with arm support while lying on his stomach. He can roll over in one direction.
Baby can grasp a rattle.
He pays attention to very small objects. Baby squeals with delight. He spontaneously smiles. Baby mimics sounds and gestures. He turns towards the source of a sound or voice.