It's About Time
Photosynthesis, Respiration, and the Carbon Cycle
Provide your class with the opportunity to view our carbon cycle close up. Young scientists research the cycle of oxygen as it completes the tasks of photosynthesis and respiration. They explore the importance of carbon in an ecosystem...
Khan Academy
Khan Academy: The Calvin Cycle
Learn about the three stages of the Calvin Cycle reactions: carbon fixation, reduction, and regeneration of the starting molecule. See how the products of the light reactions, ATP and NADPH, are used to fix carbon into sugars in this cycle.
BiologyWise
Biology Wise: An Easy Explanation of the Carbon Cycle for Kids
The importance of the carbon cycle, how it works, the sources of carbon, and the steps in the carbon cycle are explained here.
BiologyWise
Biology Wise: A Brief Guide to the Steps of the Carbon Cycle
Outlines the steps for the movement of carbon along the carbon cycle through photosynthesis, food chains, being dissolved into the ocean, the decomposition of organisms, fossil fuel formation, industrial use of fossil fuels, carbon...
BiologyWise
Biology Wise: Carbon Cycle Diagram
Explains what the carbon cycle is and the basic steps in the cycle.
BiologyWise
Biology Wise: Carbon Oxygen Cycle
The fours stages of the carbon-oxygen cycle are described - photosynthesis, respiration, combustion, and decomposition.
CK-12 Foundation
Ck 12: Biology: Recycling Matter Study Guide
Review some of the cycles that recycle matter through Earth's biospheres.
BiologyWise
Biology Wise: Biology Events
This resource describes some of the research being done by biologists and things they are discovering, the kinds of topics that might be found in science current events.
Khan Academy
Khan Academy: Photorespiration
Photorespiration is a wasteful pathway that competes with the Calvin cycle. Explore why photorespiration happens, when it's most likely to take place, and how it actually works.