The majority of video games are sedentary, meaning done in one position, but there is an increasing trend toward video games where the players are physically active. Whether or not these type of video games can be considered exercise is...

[Free Registration/Login may be required to access all resource tools.] Here you will learn how to convert complex numbers from rectangular form to polar form. You will also explore the graphs of complex numbers on a polar graph.

Understand the quality of how to hold power and influence others through John French's and Bertrum Raven's five elements of power, including legitimate, reward, expert, referent, and coercive. Learn how these powers are linked to become...

Using vectors as a starting point, this site demonstrates how complex numbers can be written in polar form. Several examples are included that require you to write complex numbers in polar and rectangular form and also represent them...

This is a good introduction to cricket with brief sections on equipment, umpire signals, forms of cricket, statistics, and examples of "good performances."

In the following tutorial, students will learn about the law of conservation of energy. They will read about some of the many forms of energy. They will understand the definition of efficiency of an energy conversion process as the...

Instructional module focusing on energy. Discussion includes forms of energy, conservation of energy, and the laws of thermodynamics. Site also includes an interactive practice quiz and links relating to the topic.

An excellent resource for learning about the different forms and devices used in poetry. Each item is linked to its own page which has examples of its use. Many of the pages have videos of authors reading their poems, and some have...

This science fair project investigates whether video games, and other forms of mental distraction, have the power to relieve pain. You will research and learn about gatekeeper cells, which control how the brain perceives pain, and how...

Lesson where students explore the emergence of the American system of democracy and political parties between 1820 and 1850. Using paintings by George Caleb Bingham and Richard Caton Woodville, and a political cartoon depicting the...

Slope-intercept form of a line is shown in formulas and examples with this Purplemath lesson. There are examples of slope-intercept with the slope and a point and with two points. Includes interactive widgets for exploring concepts.

Given real-life problems, the student will select an appropriate method and solve problems involving proportional relationships.

This tutorial looks at the anatomy of the eye and how the sense of sight works. This is the first part of a learning module. Subsequent sections cover how images are formed and detected, the concept of accommodation where the eye adjusts...

Information and examples of progressive, stative, and dynamic verb usage in the English language.

The "variety" in the title of this piece comes in the choices you can make at the top of the page. You can scroll down to the minstrel show, or you can click on the words at the top of the page. The history of the minstrel show is...

Identify the form of a quadratic function that immediately reveals a given feature of that function. Features in question are the y-intercept of the graph, the zeroes ('roots') of the function, and the vertex of the parabola.

Thorough overview of this less common form of arthritis that affects blood vessels. Includes information on symptoms, treatment, prevention, and much more.

This site has a thorough overview of this less common form of arthritis that primarily affects the back. Includes information on symptoms, treatment, prevention, and much more.

Thorough overview of this less common form of arthritis. Includes information on symptoms, treatment, prevention, and much more.

Thorough overview of this less common form of arthritis. Includes information on symptoms, treatment, prevention, and much more.

Thorough overview of this less common form of arthritis. Includes information on symptoms, treatment, prevention, and much more.

In this chemistry science fair project, students will investigate how pH levels affect the rate of a common form of corrosion, called rusting. The Science Buddies project ideas are set up consistently beginning with an abstract,...

It's hard to escape childhood without racking up a few scars. Why do these leftover reminders of a painful cut or crash look different from the rest of our skin? And why do they stick around for so long after the incident that caused...

This animation from NASA illustrates the phases in the formation of a hurricane.