Fifteen detailed pictures and informative captions delve deep into the exploration of stars—their life cycle and importance in the universe. 

How do you get a theorem named after you? Euler knows what it takes! The third lesson of five asks pupils to use an interactive activity to compare the faces, vertices, and edges of seven different three-dimensional solids. They use...

Understand the process that must occur to create carbon dioxide. What is the role of carbon dioxide in our atmosphere? A video illustrating the carbon cycle is available.

The carbon cycle is featured because virtually all living organisms need carbon to survive.

A collection of teaching resources that look at the carbon cycle and its role in a changing climate.

Kids learn about the carbon cycle and how this nutrient travels through the ecosystem to sustain life on Earth.

There are many cycles occurring in all of the Earth's organisms, including the Earth itself. This brief page highlights some of those cycles, making readers aware of how many cycles there are, big and small.

This tutorial looks at carbon dioxide in the atmosphere and how changes can impact wheat production in Kansas.

This video segment adapted from NOVA chronicles the discoveries that led to a radical new theory in which living organisms, not just geological processes, play an active role in cave formation. [5:42]

A detailed overview of global climate change, with explanations of Earth's climate change, the carbon cycle, ecosystems, and greenhouse gases, and how the movements of matter and energy impact on climate. All information is reinforced...

Kids learn about the oxygen cycle and how this nutrient travels through the ecosystem to sustain life on Earth.

Media-rich interactive explores Earth's climate, investigating what might be causing the climate to change and how to prepare for it in the future.

Water on the Web (WOW) is an advanced site allowing students to actively participate in data analysis from real research sites. Lesson plans on a range of topics are provided. There is also a tutorial for using Excel to graph WOW data.

To understand the process of photosynthesis, follow the hydrogen, carbon, and oxygen atoms as they travel between the air, the plant, and the soil.

Join NASA in its study of oceanography and learn about the Earth system, the physical ocean, and life in the ocean. Try out the Giovanni: Earth Data Visualization Tool and access satellite-derived data to enhance the learning experience.

This resource provides information on all of the aspects of global warming, climate change, and the future of the earth.

This site from NASA explains the meaning behind the different colors of the oceans. Gives information as to the role of phytoplankton in the color of the oceans and affects of the carbon cycle on the oceans.

Students investigate ocean chemistry. The article discusses Jim Bishop, ocean cycle, the biology of the sea, and carbon in the sea. The resource consists of pictures, quotes, and links to additional resources.

An all purpose site with something for everyone. Learn about global warming and climate change, ask a scientist, take a quiz, or get a lesson plan!

This site from USGS provides several activities to help understand the interrelationships among earth surface processes, ecological systems, and human activities. Also included are links to new findings and programs concerning Earth...

A collection of grid puzzles that cover a wide variety of topics in intermediate high school chemistry. These are excellent for topic review and reinforcement. The puzzles can be played online and also downloaded as worksheets. Answers...

Fun website for kids to learn about earth science. Students read about greenhouse gasses and the effect on the environment.