Won't Miss #81 - cluelessness about reducing coin return

Before I ever set foot in Japan, I used to hear about how the Japanese were completely walloping Americans on math test scores. We were made to feel like our kids were hard-pressed to add 2 and 2 and come up with 4 while Japanese kids could do Calculus in seconds with the power of their mighty brains. After coming to Japan, let's say that I've been rather dissuaded from the notion that their math