Matrix 2: Cycles in Nature
Interactive web Resources
The Nitrogen Cycle
This interactive activity how, through a process called fixation, nitrogen flows from the atmosphere, into the soil, through various organisms, and back to the atmosphere in a continuous cycle.
This interactive details the process of photosynthesis and its role in the oxygen/carbon dioxide cycle.
Cycles in Nature Diagrams
Videos and Podcasts
Wet All Over (30:04)
The class takes a wild ride with The Friz through the water cycle.
Food Chains: The Flow of Energy and Matter in the Living World (1:50)
Matter and energy flow through food chains when organisms feed on each other.
The Cycle Series: The Carbon Cycle (11:07)
All organisms must have carbon atoms to maintain their life processes. This program explains the carbon cycle-the all important natural process by which carbon atoms are recycled back and forth between the living and nonliving realms of nature.
The Cycle Series: The Nitrogen Cycle (14:04)
All organisms must have nitrogen. Explore the role of nitrogen and explains how it circulates back and forth from the abiotic and biotic sides of the natural world. Concepts covered include the need for nitrogen, free vs. fixed nitrogen, how nitrogen is fixed, legumes and soil bacteria, decay and denitrification, and nitrogen pollution.
The Cycle Series: The Oxygen Story (15:02)
The most common element on the planet, oxygen, is key to the survival of most organisms. This video explains photosynthesis as a source of atmospheric oxygen, the relationship between photosynthesis and respiration, and discusses how the oxygen cycle recycles oxygen atoms.
The Birchbark House
by Louise Erdrich
Click on the book cover to access assignments related to The Birchbark House.