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Website
Cool Math

Coolmath: Some Special Logs

For Students 9th - 10th Standards
This CoolMath resource will help students learn about exponentials and logarithms.
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Activity
Interactive Mathematics

Interactive Mathematics: Basic Logarithmic Form of Integration

For Students 9th - 10th
The derivative of logarithms is used to allow the power formula for integrals to be used in special cases. Several examples are provided to show how this is accomplished.
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Activity
Interactive Mathematics

Interactive Mathematics: Derivatives of Logarithmic Functions

For Students 9th - 10th
The formulas for finding the derivatives of logarithmic functions are presented, then demonstrated with several examples. The solutions are hidden to allow students to work the problems without help.
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Activity
Other

Labs and Projects: Applications of Exponential and Logarithmic Function

For Students 9th - 10th Standards
This site has several examples of exponential functions. There is also some background and theory information.
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Activity
Math Is Fun

Math Is Fun: Logarithms (Introduction)

For Students 9th - 10th
Students learn about logarithms in this mathematics resource. The resource explores types of logarithms, terminology, and examples.
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Activity
Purple Math

Purplemath: Basic Log Rules / Explanding Logarithmic Expressions

For Students 9th - 10th Standards
Purplemath gives both a formal and informal discussion of log rules with exercises. Examples include expanding, simplifying, and evaluating logarithms. Changing the base of a logarithm is also discussed with examples.
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Unknown Type
Hofstra University

Hofstra University: Logarithmic and Exponential Functions

For Students 9th - 10th Standards
This is a 20 question quiz on logarithmic and exponential functions. This is a good way to be sure you know how to use logarithms and exponents. The site however only tells you if you've made a correct choice, there are no explanations.
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Activity
Math Medics

S.o.s. Math: Rules of Logarithms

For Students 9th - 10th Standards
A thorough treatment of the laws of logarithms, how they relate to the laws of exponents, and examples of each.
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Graphic
Math Medics

S.o.s. Math: Table of the Common Logarithm

For Students 9th - 10th Standards
This lesson from SOS Math provides results, in table form, for the common logarithm with numbers 1 through 10.
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Activity
Other

Armstrong Atlantic State U.: Laws of Logarithms

For Students 9th - 10th
Law of adding and subtracting logarithms of the same base. Examples and a demonstration of combining sums. Links to a list of exercises.
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Activity
Math Medics

S.o.s. Math: Graphs of Exponential & Logarithmic Function

For Students 9th - 10th Standards
This lesson gives brief description of dependent and independent variables and how they relate to the exponential and logarithmic functions.
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Lesson Plan
TeachEngineering

Teach Engineering: Bone Density Math and Logarithm Introduction

For Teachers 9th - 10th
This project shows the connection between engineering, science and math by having young scholars learn the equation needed to calculate bone mineral density. Lesson includes an explanation of the equation as well as practice problems and...
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Activity
Texas Instruments

Texas Instruments: Numb3 Rs: The Graph Tells the Story

For Teachers 9th - 10th
Based off of the hit television show NUMB3RS, this lesson exposes students to graphs using logarithmic scales. Although the graphs are at first non-intuitive, students should quickly "get used" to the scale. The lesson leads to a good...
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Activity
Texas Instruments

Texas Instruments: Number Power!

For Teachers 9th - 10th Standards
In this activity, students explore patterns and rules in dealing with exponents and logarithms. They evaluate expressions with exponents and logarithms and display them in various notations. They will use their calculators to discover...
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Interactive
Ministry of Education and Universities of the Region of Murcia (Spain)

Ministerio De Educacion Y Ciencia: Exponenciales Y Logaritmicas

For Students 9th - 10th Standards
In this activity you will learn how to differentiate and solve logarithmic equations and observe the relationship between logarithmic and exponential equations.
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Lesson Plan
Illustrative Mathematics

Illustrative Mathematics: F Le Carbon 14 Dating

For Teachers 9th - 10th Standards
The task requires the student to use logarithms to solve an exponential equation in the realistic context of carbon dating. Aligns with F-LE.A.4.
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Unit Plan
TED Talks

Ted: Ted Ed: How Does Math Guide Our Ships at Sea?

For Students 9th - 10th
Explore the history of logarithms and sailing by watching this animated video. [4:19]
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Activity
Anne Arundel Community College

Anne Arundel Community College: Math 131: Change of Base

For Students 9th - 10th
The tutorial examines the change of base formula for logarithms. Students learn about the mathematics concept through examples with detailed solutions.
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Handout
University of Saskatchewan (Canada)

University of Saskatchewan: Modelling Natural Growth

For Students 9th - 10th
This site shows how to model exponential growth. The site walks the student through an example problem using logarithms to find the exponential growth of the theoretical world population.
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Activity
Cool Math

Coolmath: Exponentials & Logarithms the Exponential Monster

For Students 9th - 10th Standards
This algebra lesson explains how exponential growth works and what the formulas look like.
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eBook
CK-12 Foundation

Ck 12: Algebra Ii: 3.11 Modeling With Exponential Decay and Log Functions

For Students 9th - 10th Standards
This lesson continues exploring the process for modeling real world scenarios by writing and solving exponential and logarithmic functions. It also covers how to create and interpret graphs of such functions.
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Activity
eFunda

Engineering Mathematics: Exponential and Logarithmic Functions

For Students 9th - 10th Standards
This site explains the Exponential and Logarithmic Functions and has links to plots of the functions.
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Activity
University of Utah

University of Utah: A Simple Example Logarithms

For Students 9th - 10th Standards
This site from the University of Utah provides a good simple base conversion page.
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Handout
Paul Dawkins

Paul's Online Notes: Logarithmic Differentiation

For Students 10th - 12th
Online notes with examples and solutions.

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