Utah Education Network
Uen: From Caterpillars to Butterflies: Life Cycles
Second graders will illustrate and compare the life cycle of a butterfly.
US Geological Survey
U.s. Geological Survey: What Is the Water Cycle?
A quick summary of the water cycle that includes a diagram of the cycle, with links to in-depth explanations of each component of the cycle. Click "water-cycle home" to access water-cycle resources in a variety of languages.
Other
National Bureau of Economic Research: The Nber's Business Cycle Dating Committee
A report on trends in business cycles and characteristics which tend to show signs of future economic development. A question and answer session is also provided at the end of the report. The data is provided in an Excel spreadsheet,...
PBS
Pbs Learning Media: The Nitrogen Cycle
Nitrogen, one of the most abundant elements in the universe, is essential to life. This interactive activity adapted from the University of Alberta provides an overview of the nitrogen cycle. Includes background reading handout and...
Better Lesson
Better Lesson: Plant Life Cycle Introduction
Sequencing is an important skill for kindergarten students. This lesson uses nonfiction texts to allow students to make a real-life connection to the skill of sequencing and learn about the plant cycle at the same time! Included are...
University Corporation for Atmospheric Research
Ucar: The Nitrogen Cycle Game
Students play the role of nitrogen atoms traveling through the nitrogen cycle to gain understanding of the varied pathways through the cycle and the relevance of nitrogen to living things.
Khan Academy
Khan Academy: Cell Cycle Checkpoints
Learn how cells use checkpoints to regulate the cell cycle. This article provides an overview of cell cycle control, outlining the factors that influence a cell's decision to pause or progress at each checkpoint.
Science Buddies
Science Buddies: Make a Miniature Water Cycle Model
In this activity, you will investigate some of the processes that make water move in and out of the atmosphere by making a miniature water cycle model inside a plastic bag.
Howard Hughes Medical Institute
Hhmi: Biointeractive: The Eukaryotic Cell Cycle and Cancer
Cell division is the only way single-celled organisms can reproduce. Learn more about cell division and explore the phases, checkpoints, and protein regulators of the cell cycle in this interactive. Find out how mutated versions of these...
University Corporation for Atmospheric Research
Ucar: The Carbon Cycle
A comprehensive introduction to the carbon cycle. The cycle of atoms between living and non-living things is known as a biogeochemical cycle. The most common of these are the carbon and nitrogen cycles.
Better Lesson
Better Lesson: Animal Life Cycles Introduction
Third graders will explain commonalities in animal life cycles as well and to compare life cycles of different animal groups.
University of Missouri
Nitrogen in the Environment: The Nitrogen Cycle
A description of the key concepts and steps within the nitrogen cycle, along with a large chart illustrating the cycle in pictorial form.
Alabama Learning Exchange
Alex: Leap Into the Life Cycle of a Frog
During this lesson students explore the life cycle of a frog. They will raise frogs in the classroom from tadpoles and document and describe each stage of the life cycle.
Library of Economics and Liberty
Concise Encyclopedia of Economics: Business Cycles
Definition, description, and examples of business cycles in the economy.
NASA
Nasa: Earth Observatory: The Carbon Cycle
Learn about the element carbon and its importance on the Earth's atmosphere and sustainability of life on the planet. Additionally, understand the role the carbon cycle plays in global climate change over time.
Encyclopedia of Earth
Encyclopedia of Earth: Biogeochemistry: Phosphorus Cycle
Article explaining what the phosphorus cycle is, where it occurs, its place in the biotic world, and the environmental impact of human activities on the phosphorus cycle. (Published: October 8, 2009)
National Geographic
National Geographic: The Very Hungry Caterpillar and Its Life Cycle
Engage students with a retelling of Eric Carle's "The Very Hungry Caterpillar" and watch a video from "Great Migrations" to enhance scientific discovery of the life of a butterfly.
Encyclopedia of Earth
Encyclopedia of Earth: Environmental Chemistry: Carbon Cycle
Article explaining the importance of carbon as the basis for life, carbon dioxide's role in photosynthesis and respiration, carbon in the ocean and lithosphere, the impact of human activities on the carbon cycle, carbon that seems to be...
NASA
Nasa Wavelength: Matter Cycles Matter: The Case of Carbon
A collection of teaching resources that look at the carbon cycle and its role in a changing climate.
University of Colorado
University of Colorado: Principles of Macroeconomics: Business Cycles, Aggregate Demand and Supply
A comprehensive look at the way aggregate demand and supply affect the business cycle. Information used is current to 2003. From the Department of Economics at the University of Colorado.
US Geological Survey
U.s. Geological Survey:the Water Cycle for Kids and Students: Advanced Students
Hyperlinked diagram provides an in-depth explanation of each phase of the Earth's water cycle.
Encyclopedia of Earth
Encyclopedia of Earth: Biochemistry: Nitrogen Cycle
Article explaining what the nitrogen cycle is, and its role in an ecosystem. (Published: June 28, 2010)
Woods Hole Oceanographic Institution
Woods Hole Oceanographic Institution: Global Carbon Cycle
Interactive learning activity examines the global carbon cycle and describes the exchanges of carbon between the Earth's atmosphere, oceans, land and fossil fuels.
Khan Academy
Khan Academy: Lesson Summary: Business Cycles
In this lesson summary review and remind yourself of the key terms, concepts, and graphs related to the business cycle. Topics include the four phases of the business cycle and the relationship between key macroeconomic indicators at...
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