Instructional Video
Khan Academy

Khan Academy: Pre Calculus: Vi and Sal Talk About the Mysteries of Benford's Law

9th - 10th
A video in which Benford's Law is described briefly and shown graphically. A couple of real-world examples are given in which the data follows Benford's Law. Students are motivated to think about why Benford's Law works. [8:04]
Instructional Video
Khan Academy

Khan Academy: Pre Calculus: Benford's Law Explanation

9th - 10th Standards
The second video on Benford's Law from the Khan Academy. This video connects Benford's Law to the logarithmic scale in an effort to explain why it holds true, particularly in data that grows exponentially. [6:27]
Instructional Video
Khan Academy

Khan Academy: Algebra: Richter Scale

9th - 10th Standards
Discusses the Richter scale as a logarithmic scale and explains how to interpret the magnitudes of four different earthquakes. [11:19]
Instructional Video
Sophia Learning

Sophia: Simplifying Logarithmic Expressions: Lesson 11

9th - 10th
This lesson will show you how to use the rules of simplifying to combine logs with common bases. It is 11 of 11 in the series titled "Simplifying Logarithmic Expressions."
Instructional Video
Khan Academy

Khan Academy: Pre Calculus: Vi and Sal Explore How We Think About Scale

9th - 10th
A video exploring the idea of the logarithmic scale by comparing it to a piano keyboard. Frequencies made by each note on a piano follow a logarithmic scale. For example, the frequency made by a C is double the frequency of the C just...
Instructional Video
Sophia Learning

Sophia: Simplification of Logarithmic Expressions: Lesson 2

9th - 10th Standards
Through this lesson, rules, laws, and principles of how to rewrite logarithms will be shown to simplify a logarithm. It is 2 of 5 in the series titled "Simplification of Logarithmic Expressions."
Instructional Video
Sophia Learning

Sophia: Simplification of Logarithmic Expressions: Lesson 3

9th - 10th
Through this lesson, rules, laws, and principles of how to rewrite logarithms will be shown to simplify a logarithm. It is 3 of 5 in the series titled "Simplification of Logarithmic Expressions."
Instructional Video
Sophia Learning

Sophia: Simplification of Logarithmic Expressions: Lesson 4

9th - 10th
Through this lesson, rules, laws, and principles of how to rewrite logarithms will be shown to simplify a logarithm. It is 4 of 5 in the series titled "Simplification of Logarithmic Expressions."
Instructional Video
Sophia Learning

Sophia: Simplification of Logarithmic Expressions: Lesson 5

9th - 10th
Through this lesson, rules, laws, and principles of how to rewrite logarithms will be shown to simplify a logarithm. It is 5 of 5 in the series titled "Simplification of Logarithmic Expressions."
Instructional Video
Sophia Learning

Sophia: Simplification of Logarithmic Expressions: Lesson 1

9th - 10th Standards
Through this lesson, rules, laws, and principles of how to rewrite logarithms will be shown to simplify a logarithm. It is 1 of 5 in the series titled "Simplification of Logarithmic Expressions."