Reader’s Digest – Marc Peyser 
If you were like most kids, your mother told you there were three no-no’s when it came to your fingers: Don’t put them in an electrical outlet, don’t stick them up your nose (at least not in public), and don’t use them when you’re counting. The first two laws of finger dynamics are as true as ever. But experts in education and cognition now believe that using your fingers to do math is not only a perfectly good idea but may even help children become superior students.(more)