4th Grade Cash Smoothie
Our 4th graders at Lower School started our Magnetic and Electrical Unit with 鈥淎 Cash Smoothie鈥�. Yes, you read that right; MONEY IN A BLENDER! It鈥檚 true鈥� some money is magnetic. Iron is in a dollar bill and the only logical question for science enthusiast is, 鈥淗ow can I get the iron out of that dollar bill?”
Why is there iron in a dollar bill you ask? It鈥檚 really very simple: the government uses specially made magnetic inks to print money. We used a rare earth magnet called a neodymium magnet to attract the iron. Just don鈥檛 try to put that cash smoothie back into circulation-or you might find yourself explaining the science of magnets to the Secret Service!