Interesting site on Pompeii. The first graphic you see is the city of Pompeii. Includes information and graphics about the volcano.

Resource provide educational student activities, teacher resources, service learning, recreation education, and living with the wildlife.

A site on the disorders of the digestive system and on the similarities and differences between the digestion of birds and ruminants.

Describes the structures associated with the large intestine. Gives a good illustration of the microscopic anatomy of the large intestine.

For animals, bright, flashy coloration can serve as a warning or as an invitation. Either way, colorful skin, feathers, and scales yell, "Notice me!" This collection of images shows examples of some of the world's most colorful creatures.

Paul Nurse describes his research that showed that humans share some genes with organisms as different from us as simple brewer's yeast. Footage from Secret of Life: "Immortal Thread."

This page links to a number of fun Java games, designed to help students learn the names and symbols of various ions. Games include matching, concentration and word search.

This time-lapse microphotography of developing embryos shows the common ancestry of all vertebrates. Footage from NOVA: "Odyssey of Life." [4:42]

An explanation of the prefixes and suffixes associated with polyatomic ions. [5:48]

Khan Academy learning modules include a Community space where users can ask questions and seek help from community members. Educators should consult with their Technology administrators to determine the use of Khan Academy learning modules in their classroom. Please review materials from external sites before sharing with students.

See how scientists study mantle convection, or the flow of hot rock in the Earth's deep interior, in order to better understand how this flow shapes the surface of the Earth. Learn how convection makes the Earth dynamic. [7:10]

Khan Academy learning modules include a Community space where users can ask questions and seek help from community members. Educators should consult with their Technology administrators to determine the use of Khan Academy learning modules in their classroom. Please review materials from external sites before sharing with students.

Video lecture focuses on light-dependent reactions and how they work. It shows how light energy can excite electrons which can be used to create ATP and NADPH. [9:04]

Khan Academy learning modules include a Community space where users can ask questions and seek help from community members. Educators should consult with their Technology administrators to determine the use of Khan Academy learning modules in their classroom. Please review materials from external sites before sharing with students.

How angular momentum is conserved within a system when there is no external torque. [7:16]

Khan Academy learning modules include a Community space where users can ask questions and seek help from community members. Educators should consult with their Technology administrators to determine the use of Khan Academy learning modules in their classroom. Please review materials from external sites before sharing with students.

This site is from the Physics Department at Georgia State University. The conservation of energy as a fundamental conservation law is presented and compared to other conservation laws (momentum and angular momentum). Links to further information are provided.

See how this principle translates in to fluids and the Bernoulli equation as well as into electric circuits and the voltage law and finally into heat and thermodynamics through the first law of thermodynamics.

A video showing how the equation for the conservation of momentum is derived using an example of balls colliding. Understand how to calculate momentum and impulse with this video. [9:28]