Khan Academy: Cell Division: The Cell Cycle and Mitosis: Interphase

As the world population increases, demands on the carbon cycle also increase. A well-designed lesson first explores the greenhouse effect and its impact on global warming. Further sections have pupils study the effect of greenhouse gases...

Learners construct a model of the hydrologic cycle, and observe that water is an element of a cycle in the natural environment. They explain how the hydrologic cycle works and why it is important, and compare the hydrologic cycle to...

Meteorologists view an animated video by the Environmental Protection Agency to learn how the carbon cycle works, and then move into groups to analyze and graph actual data of the atmospheric carbon dioxide concentration from Hawaii's...

A video discussing the similarities and differences between the processes of mitosis and meiosis. Learn how mitosis results in two identical diploid cell while meiosis results in four haploid genetically different cells. [5:50]

Article takes a look at how cancer develops and what's wrong with cancer cells. Also, delves into how abnormal forms of cell cycle regulators can contribute to cancer.

A video explaining embryonic and somatic stem cells by overviewing early development of an embryo. Also discussed is the reasons why embryonic stem cell research can be controversially. [19:54]

Take a ride on the carbon cycle by watching this animated featurette. Those who do will learn about the element carbon, how it cycles through the atmosphere and biosphere, and how it contributes to Earth's temperature. This video comes...

Expose your class to the steps of the nitrogen cycle with this short clip. Colorful computer imagery and animation explain how nitrogen travels from the atmosphere as a gas into plants and soil, where bacteria convert it into nitrates....

Explains the phases of meiosis, starting with a discussion of how it is different from mitosis. [27:22]

Young scholars explore the water cycle and associated phase changes. They predict what happens to the mass of an ice cube in a Ziploc bag, discuss and act out phase changes and diagram the water cycle.