Excellent article on teaching Money Concepts in school.
" Teaching your child about money reinforces the basic number facts of
the base 10 number system: 0, 1, 2, 3, 4, 5, 6, 7, 8, 9. At first,
for younger children, you can count the number of each
denomination..." by Russ Lewis of K12Math.com
Link to full article...
http://www.k12math.com/math-concepts/Money.htm