Counting With Tesla Author:Chris-Rachael Oseland Meet Nikola Tesla, a real life mad scientist! Don't worry, though. Tesla wasn't an angry mad scientist. He was an eccentric one. That means he did all kinds of nutty things that made him special. He was also super smart. Whenever you watch television, listen to a radio, or use a rechargeable toothbrush, you have Nikola Tesla to thank. Little... more » geeks in training can learn numbers big and small while also learning all kinds of electrifying facts about Tesla's inventions.« less