This is a 41 page Smartboard file over writing numbers in scientific notation. This is part 1 which starts by explaining how you know that a number is in scientific notation. The lesson shows numbers that start out greater than 10, it shows numbers less than zero (negative exponents), and it also explains how to take a number and write it in standard notation. Some of the examples have balloons to pop. My students love these kind. As always all practice pages contain answers.