Look mama, I can go down the stairs!

During my last parent-teacher meeting with CJ's teacher, she told me that CJ can go up the stairs with alternating steps, but he doesn't go down that way.

I asked myself if my little guy is even capable of going down the stairs with alternating steps.  He's not tall (not short either, just the right height for his age), and I always worry when he's going down steep flights of stairs.

Is this some sort of important developmental milestone?  Apparently it is, because CJ's school "taught" him how to go down the steps with alternating steps.  A couple of days ago, CJ proudly showed me that he could do it.  Check it out.