If this dog owner can teach his German Shepherd to add and subtract, why can't teachers get our kids to learn? Every time I go into a store and try to give them a few pennies to make the change come out even, the kid behind the counter looks at me like I'm an alien, or Steven Hawking. I actually had one kid ask my how I figured it out the change in my head. He was completely amazed that I could subtract without a calculator. Another kid called for the manager because she didn't know how to add my three pennies to the 97 cents that the register showed she owed me.