A great site with extensive information about copper and its role in life on Earth. Includes history of copper as well as a 59-page book on copper production around the world, published in 2012.

Read about how the ability to vote changed from requiring the ownership of property to almost complete enfranchisement of white males by 1840. There was disenfranchisment of women and free blacks in the same period of time.

The basic laws of math including the commutative, associative, and distributive laws are discussed on this site.

A comprehensive tutorial from AAA Math that includes multiplication facts, multiplying numbers, multiplying fractions, multiplying decimals and properties of multiplication. Games and practice exercises are part of this lesson.

Site contains information on sapphires, including its history, symbolism, and physical properties.

This site from Washington State University provides properties and rules of addition and multiplication that help with proofs.

Students learn to identify real numbers as rational numbers and irrational numbers. They review rational numbers as repeating decimals, and irrational numbers as non-repeating decimals. They also review commutative, associative,...

In this exercise, students practice repeated addition. Students receive immediate feedback and have the opportunity to get hints, watch a tutorial video, and try questions repeatedly.

This math site gives the formula for taking the dot product of two vectors, gives properties of dot products, (commutative, associative, and distributive), how to find the derivative of a dot product. This site has links to several other...

The goal is for students to understand the basics of engineering associated with the use, selection, and properties of fabrics. A wide variety of natural and synthetic fibers are used in our clothing, home furnishings and in our travel...

This brochure, from the American Psychological Association, offers a comprehensive overview of violent behavior and the warning signs associated with this behavior. Content includes a focus on the different reasons for violence, how to...

In this module, you will learn why gases are not affected by intermolecular attractions! You will also learn about the properties of gases and the math associated with this special group of matter.

Students learn about viscoelastic material behavior, such as strain rate dependence and creep, by using silly putty, an easy-to-make polymer material. They learn how to make silly putty, observe its behavior with different strain rates,...

Students learn about geotechnical engineers and their use of physical properties, such as soil density, to determine the ability of various soils to offer support to foundations. In an associated activity, students determine the bulk...

This lesson focuses on how food packages are designed and made. Students will learn three of the main functions of a food package. They will learn what is necessary of the design and materials of a package to keep food clean, protect or...

An explanation of what light is and some of its properties.

Explores the commutative, associative, and distributive properties of integers, and rules for adding and subtracting them.

This page contains interesting facts on zircon, including its history, physical properties, and place of origin. Good informational site on this gemstone.

Explore commutative, associative, and distributive properties for multiplication and addition and how they are related.

[Free Registration/Login may be required to access all resource tools.] A collection of resources that teach students that, unlike multiplication of numbers, matrix multiplication for square matrices is not a commutative operation, but...

Explore the world of termites with this lesson, which includes a close-up look at termite specimens, special termite adaptations and insect anatomy. Young scholars will also learn about property risks associated with termites, and how...

Comprehensive, easy-to-understand explanation in English and Spanish of how to acquire housing in the United States. Legal issues associated with buying or renting a residence are also presented. Though the site caters to immigrants to...

Students are introduced to the concepts of stress and strain with examples that illustrate the characteristics and importance of these forces in our everyday lives. They explore the factors that affect stress, why engineers need to know...

The goal of the activities is for students to understand the basics of engineering associated with safety products. Using a bicycle helmet helps to protect the brain and neck during a crash. In order to do this effectively, helmets must...