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American Museum of Natural History

Journey to the Stars

For Students 6th - 12th
Fifteen detailed pictures and informative captions delve deep into the exploration of stars—their life cycle and importance in the universe. 
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Ducksters

Ducksters: Science for Kids: Oxygen Cycle

For Students 1st - 9th
Kids learn about the oxygen cycle and how this nutrient travels through the ecosystem to sustain life on Earth.
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NASA

Nasa Wavelength: Matter Cycles Matter: The Case of Carbon

For Teachers 9th - 10th
A collection of teaching resources that look at the carbon cycle and its role in a changing climate.
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PBS

Pbs: Nova: Illuminating Photosynthesis

For Students 4th - 8th
To understand the process of photosynthesis, follow the hydrogen, carbon, and oxygen atoms as they travel between the air, the plant, and the soil.
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Ducksters

Ducksters: Science for Kids: Carbon Cycle

For Students 1st - 9th
Kids learn about the carbon cycle and how this nutrient travels through the ecosystem to sustain life on Earth.