Yes, I actually used this graphic to explain supply and demand to 5th graders. It has been a privilege to teach them the 'Stock Market Game' these past few Wednesdays. We decided to broaden the scope to include money and banking, entrepreneurship, accounting and happiness.
Happiness? Yes, happiness. When putting together the teaching materials, I had this feeling that we were feeding the assumption that more money means more happiness. So when we tested the kids today (with a really cool live clicker system) we asked this for the final question, "Can money buy happiness?" Yes or No.
No beat Yes 4:1. After some discussion, we concluded with "There is more happiness in the getting, than in the having."