A.,
This is a typical way for infants and toddlers to explore their world, but the intensity you describe sounds like it could be more than expected for her age. The "typical" spectim has a wide range, but you should not ignore anything that is truly atypical. Early intervention is the most sucessful.
If there is anything else in her development of speech, langauge, motor skills, social skills, eating, sleeping, or cognitive development that gives you cause to ask "is this normal?" then make an appointment with a developmental pediatrican and have it checked out. If not, keep everything she could choke on put away and wait for it to go away. The help me grow program is one way to go, but nothing will ever beat a private evaluation for accuracy.
M.