Instructional Video10:05
Khan Academy

Introduction to Logarithm Properties (Part 2), Logarithms

7th - 9th
Sal gets to the heart of this video, clarifying that it's important to understand math "so you can apply it later on and not have to relearn everything every time." True to his word, Sal demonstrates ways to solve logs and exponents more...
Instructional Video9:49
Khan Academy

Introduction to Logarithms

7th - 9th
Sal crafts a demonstration around one of his "most misspelled words" - logarithms - in this thorough and understandable video. He defines a logarithm before using several examples to illustrate his point. Sal makes learning this concept...
Instructional Video4:32
Curated OER

How Do You Express a Logarithm in Terms of Common Logarithms?

10th - 12th
Logarithms can be a little tricky and if you'd like to use a calculator you'll need to use a formula to change the given logarithm into base ten. This tutorial defines the formula, uses it to change a logarithm to base ten, then how to...