It's a snow day in NYC!
If you're out taking photos, remember that your camera is going to freak out with all the brightness and most likely underexpose your photos.
Here are some tips on how to take better photos in the snow
If shooting in manual: spot meter for faces or over expose - your kids' faces should look correctly exposed, even if this means the snow is a little blown out.
If shooting in aperture priority (and some other modes): use exposure compensation to overexpose
On your point-and-shoot: see if your camera has a "snow" mode
On your iphone: use tap to focus and second tap for exposure (on apps such as Camera+)
In general: you can try to get less snow in the photo so there is less brightness for your camera to struggle with, or try to find an angle where the light is reflected off the snow and onto faces.
Have fun and keep warm!