Gives in-depth information about GIS - its history, what it is, techniques and tools, applications, etc.

Use this handy chart to help acquaint yourself with major facts about the solar system. This chart is broken down by planet and displays data such as the size of the planet, distance from the sun, rotation period, orbital period,...

In this exercise, students practice solving systems of linear equations in word problems. Students receive immediate feedback and have the opportunity to get hints and try questions repeatedly.

A system of linear inequalities in two variables consists of at least two linear inequalities in the same variables. The solution of a linear inequality is the ordered pair that is a solution to all inequalities in the system and the...

Get information about solving systems of equations in three variables by viewing examples and a video lesson. [6:35]

Make learning about the human respiratory system fun and easy. Explore how this system gets oxygen into the body for gas exchange.

Rotatable view of the respiratory system lets you examine the lungs, larynx, and trachea in 360 degrees.

Review the main facts and figures that describe the eight planets in the solar system.

Describes the anatomy of a frog's digestive system and how the stages in the process of digestion. A comparison is made with the human digestive system.

In this Curriculum Unit, students will consider "The First American Party System: Events, Issues, and Positions" in 3 Lessons. The unit also includes worksheets and other student materials that can be found under the resource tab.

Discusses the Indian reservation system, the impact it had on Native Americans, violent clashes between whites and Indians, and how it was destroyed by the Dawes Act of 1887 and resurrected in the 1930s. Includes questions for students...

In this infographic from KQED, examine age, gender, and race in California's prison population to note the inconsistencies between who is in the general population and who is serving time behind bars. In the accompanying classroom...

Explore the solar system through this site that includes vivid multimedia resources. Learn the latest scientific discoveries, the history of space exploration, and much more. Site includes videos, graphics, articles, and photographs.

As technology has advanced, so do our views and understanding of the solar system. No longer do we have to rely on our unaided eyes to observe planets. View these high-quality images of planets provided by NASA spacecraft.

Learn the characteristics of a Market Economy, the state the four fundamental questions faced by any economic system. From an online textbook by Mark Healy of Harper College.

Learn about some smart home devices and systems.

Learn about the Spoils System during Andrew Jackson's presidency that was based on the policy of removing political opponents from federal offices and replacing them with party loyalists.

Explains the different types of optical character recognition technology available for the blind and visually impaired.

Print or create worksheets to assess students' understanding of radicals, square roots, and irrational numbers.

This resource is from the QuickMath website that illustrates how to graph equations, inequalities and a system.

This encyclopedia article describes how the credit card system works. It discusses the history, how credit cards are used, features, types, the numbering system, pros and cons, and more.

This is a rich learning module where students explore the use of telegraphs and of Union codes during the Civil War. Both topics have an "Explainer" to introduce it, pre- and post-activities, and primary and secondary source materials to...

An article on how the marketing quota system controls the supply of peanuts on the market, and how peanut farmers have fared with and without these quotas.

An information resource on threats to computer security, how to identify and report viruses, up-to-date articles on computer system vulnerabilities, etc.