Animated activity offers a simple look at meiosis and the production of gametes for reproduction. The stages are well animated and then students can put the gametes together to make baby dragons to illustrate how different they can be. Note that the sex chromosomes in this activity are based on those found in birds and are not reflective of the chromosomes that determine sex in mammals.

Use butterflies, mice, or finches to illustrate how natural selection changes populations. Each group has a different interactive animation that illustrates the concept.

Find out how Quichua Indians, indigenous people of the Amazon, practice sustainable agriculture by rotating fields and by slashing and burning. Try your hand at crop rotation to see if you understand the principles of this agricultural convention.

Omar helps his parents sell things at the market. Join him while he learns about the relationship of the Sun, Moon, and Earth.

Ali really loves to make music. Help make Ali's dream come true. Together, answer questions about musical instruments.

Excellent Eight Planets site that provides a vast amount of information about planet Earth. Very comprehensive and complete site.

Watch this narrated screencast which explains the physics of collisions when applying Newton's second law of motion. [4:12]

This site from Georgia State University Physics Department defines elastic potential energy and explains its origin. Provides an equation for computing elastic potential energy and an opportunity to practice solving problems with an automated problem-solver.

We can think of the forces between charges as something that comes from a property of space. That property is called the electric field. [13:33]

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.

Read a passage about Electric Field Treatments (EFT) and answer the follow-up questions.

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.

Anna loves electricity. Watch her construct a homemade flashlight and show off her new, electrifying hairdo in this video segment from ZOOM. [3:05]

This site from Georgia State University defines electric potential energy and relates it to the concept of electric potential. Discusses the idea of a reference point or a zero potential location.

This site has links to various topics about electrical engineering. These include institutions, resources, journals, etc.

From radio waves to gamma rays, this video segment from NASA introduces the seven categories of the electromagnetic spectrum and how each type of radiation is part of our everyday lives. [2:58]

Learn about the coupling of an electric field with a magnetic field to create electromagnetic waves in this video. Video also discusses how different types of electromagnetic waves have different wavelengths which forms the electromagnetic spectrum. [11:01]

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.

A tutorial on the electromagnetic and visible spectra. Discusses dispersion and how perceptions of white and black are related to the visible light spectrum.

An explanation of identifying the electron configurations of the D-block elements. [10:18]

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 in-depth video tutorial explains the rules for filling orbitals with electrons in an atom. [11:28]

An excellent overview of electron spin, what it means in non-mathematical terms and quantum mechanical terms.