Eric the mathemagician illustrates the power of double to turn a single gold coin into a billion coins in just one month. It's not magic ... it's mathematical! The Pedagogical Side: This segment introduces the notion of exponents - how many times the number of multiplications is multiplied by itself - in a visual way, to illustrate the power of exponential growth when we know how many times to multiply a number by itself (2 1 = 2, 2 2 = 4, 2 3 = 8, 2 4 = 16, 2 5 = 32, 2 6 = 64, etc.)