Play with your baby down on the floor. Talk about the toys, colors, and shapes you are playing with. Roll a ball to her and encourage her to roll it back to you.
Lie on the floor and watch as your baby crawls over you. (She'll do this without any encouragement, and she'll do it for many years!). Using you as a support, she'll pull herself up to standing.
Make an obstacle course for your baby to move through. She will love climbing though a tunnel made out of boxes and under the chair or behind the couch.
Play with rolling toys such as balls and cars. Your baby will have the stability to sit and push these back and forth, either by herself or with you.
Play peek-a-boo with your baby, using your hands, towels, or blankets.
Play pat-a-cake with your baby, alternately clapping your hands and then patting her hands.
Raising Your Child: The Complete Illustrated Guide is an information-packed guide that leads parents through the ever changing maze of new behaviors, developments, and challenges present in a child's first six years. It is filled with essential information, expert advice, practical solutions, and key choices to ensure a child's healthy development for their first six years -- and set them up for success in later developmental stages. In addition to understanding their child's stage of development, readers are given parenting techniques and activities they can use with their child to maximize physical, emotional, intellectual, and behavioral development at every age and stage.
Get more ideas from Raising Your Child: The Complete Illustrated Guide to help with your baby's development.