00:00 Introduction
00:21 Definition of a Log
02:43 Example 1
03:55 Example 2
04:44 Example 3
06:11 Example 4
07:02 Recall roots as exponents
07:54 Example 5
08:55 Common and Natural Logs
11:54 Estimating Logs without a Calculator
14:29 Evaluating Logs with a Calculator - Change of Base Formula