The rule of thumb is that a baby doubles her birth weight by 4 months (and quadruples her birth weight by age 2).
The key here is that babies this age still need to be supported, but will often enjoy being allowed to test out their legs in preparation for walking in the months to come. Yarn lots of pictures, hooks, thread, Needles, etc. Consult with your pediatrician if you have any concerns about your baby's development.
While it is very unusual for infants this age to gain true mobility, some more precocious ones will start to commando crawl, or drag themselves on their bellies while pulling themselves forward with their arms. Think your opinion doesn’t matter? Well at eHow it does! Show off your expertise by leaving a comment today. Just generally spend more time kicking or lying on their backs and playing with their fingers and toes.
She'll like watching it, and she might pull on the ribbon and watch the balloon move. Supporting weight when pulled to standing position. Tie a Mylar or other nonbreakable balloon to her stroller with a wide ribbon. The amount and thickness of the cereal gradually can be increased.