As an in home daycare provider and part time photographer I have taken a lot of photos of children. I have learned over the years to use a shutter speed that allows you to turn off the flash and use available light. To do this you may need to dial up your ISO to 400 or more indoors or 400 or less outdoors. Children learn quickly and will not look your way if they think you are going to blind them; plus the natural light will show off their natural skin tones.
Manda Mendoza Photography
www.mandamendoza.com