Here is a site that clearly and thoroughly explains the concept of infinite limits. There are example problems solved, problems for the student to attempt, and answers to the student problems. Point this site out to students who have...

Here is a site that clearly and thoroughly explains instantaneous velocity and how to solve related rates problems by using implicit differentiation. There are example problems solved, problems for the student to attempt, and answers to...

Here is a site that clearly and thoroughly explains how to find the derivative of exponential and logarithmic functions. There are example problems solved, problems for the student to attempt, and answers to the student problems. Point...

Here is a site that clearly and thoroughly explains simplifying radical expressions. There are example problems solved, problems for the student to attempt, and answers to the student problems. Point this site out to students who have...

Presents labeled illustrations of a plant cell and an animal cell which demonstrate the parts that are common and different. Next is a table listing cell organelles and stating whether each is present or absent in a plant or animal cell....

Here is a site that clearly and thoroughly explains the concept of derivative from the definition. There are example problems solved, problems for the student to attempt, and answers to the student problems. Point this site out to...

Here is a site that clearly and thoroughly explains how to solve applied max/min problems using the first derivative. There are example problems solved, problems for the student to attempt, and answers to the student problems. Point this...

Here is a site that clearly and thoroughly explains the limit definition of the transcendental number e. There are several different approaches used to find the value. Point this site out to students who have been absent or who need...

Here is a site that clearly and thoroughly explains how to find the derivatives of the six inverse trigonometric functions. There are example problems solved, problems for the student to attempt, and answers to the student problems....

Here is a site that clearly and thoroughly explains how to find the derivative of each of the six trigonometric functions. There are example problems solved, problems for the student to attempt, and answers to the student problems. Point...

Here is a site that clearly and thoroughly explains the quotient rule, implicit differentiation, and derivatives of inverse functions. There are example problems solved, problems for the student to attempt, and answers to the student...

Here is a site that clearly and thoroughly explains the chain rule for derivatives of composite functions. There are example problems solved, problems for the student to attempt, and answers to the student problems. Point this site out...

Here is a site that clearly and thoroughly explains many rules for derivatives and proves or derives them. There are example problems solved, problems for the student to attempt, and answers to the student problems. Point this site out...

Understand the logic behind phylogenetic trees. Learn how to build a tree using data about features that are present or absent in a group of organisms.

This poem shares a teacher's response to a child who wants to know if he missed anything after a day's absence from class.

This is a glossary entry for the term "Apostrophe" including a definition, examples, and a discussion of the differences between "apostrophe" and an "authorial instrusion."

The text of William Shakespeare's Sonnet 98.

Eastern Moles have the widest distribution of any North American mole and are common throughout most of the eastern United States where soils are favorable. They prefer moist loamy or sandy soils and are scarce or absent in heavy clay,...

A map of the United States showing the results of the House vote on the Tariff Bill of 1828 during the presidency of John Quincy Adams. The map is keyed to show the areas of votes for, against, or non-votes on the bill, and the for or...

With an overview of topics related to chemical equilibrium, this site provides a foundation to a study of thermodynamics and entropy. The subject, absolute entropies, is discussed in addition to the third law of thermodynamics, phase...