Purplemath does a wonderful job of explaining logarithms. The lesson begins with a discussion of the relationship between logarithms and exponentials and very simple examples. The lesson gives important information regarding logarithms...

Evaluate advanced logarithmic expressions by using the fact that a^x=b is equivalent to log_a(b)=x. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.

Solve various problems that focus on the relationship between a^x=b and log_a(b)=x. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.

Evaluate basic logarithmic expressions. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.

Students examine an image produced by a cabinet x-ray system to determine if it is a quality bone mineral density image. Students write in their journals about what they need to know to be able to make this judgment. Students learn about...

Exponential identities and logarithms that are commonly used are listed on this page.

Exponential identities and logarithms that are commonly used are listed on this page.

A comprehensive guide for learning all about logarithms with definitions, the rules or properties of logs, common and natural logs, negative logs, how to expand logs, solved examples, and practice questions.

Test your skills at exponents, root and logarithms. Includes advanced challenges. There are nine levels and the test may be taken with or without a timer.

This site explains The logarithm constant : log(2). It is a very comprehensive site.

A practice test on exponents and logarithms, covering the basics and going through solving exponential and logarithmic equations.

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...

The purpose of this task is to use technology to study the behavior of some exponential and logarithmic graphs and to manipulate some explicit logarithmic and exponential expressions. Aligns with HSF-LE.A.4, F-BF.B.5, and F-IF.C.7.e.

The connection between exponential and logarithmic functions is made clear through examples and practice exercises.

This tutorial contains 13 lessons on logarithms and exponential functions including exponential shortcuts and rules, graphs and rules of logarithms, and many more.

The laws of logarithms (which flow directly out of the laws of exponents) are discussed here. Combining logs with the same base and the Change of Base Formula are also explained in straightforward language for the reader.

Explanation and examples of inverse functions with exponents and logarithms.

A page showing real life applications of natural logarithms in exponential grown and decay functions and Newton's law of cooling. Also includes exercises.

This site explains the natural log and its integral. Includes examples.

This site provides an explaination of the number e with equations and examples.

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.

Here is a site that clearly and thoroughly explains all the rules of algebra from commutative and associative rules through rules for exponents and logarithms. A great review of the important rules from Algebra I and Algebra II! Point...

This animated video explores logarithms and explains how they are used in chemistry. Get the basics on these critical mathematical functions -- and discover why smart use of logarithms can determine whether your eyes turn red at the...

A thorough treatment of the laws of logarithms, how they relate to the laws of exponents, and examples of each.