Or at what age do you plan to start them in sports or dance/music lessons (activities other than open gym classes and mommy-and-me music)?
A friend with a first grader said her son started several different sports when he turned 3. That seems kind of early to me, but I've definitely seen a bunch of little guys out on the tee ball field, and they looked like they were loving it!
I'm not ready to become a soccer mom yet!