Label your fingers on both left and right hands. The thumbs are #1. Index fingers are #2. Middle fingers are #3. Ring fingers are #4. Little fingers, or pinkies, are #5. Children find it helpful if you trace their hands on a piece of paper and then label each finger accordingly.
Practice wiggiling your fingers while saying the accompanying #. Hold up your hands and wiggle your first fingers (thumbs).
Wiggle your second fingers.
Wiggle your third fingers.
Wiggle your fourth fingers.
Wiggle your fifth fingers.
I know it seems funny, but it helps!
