An interactive applet that acts as a 'digital manipulative' for explaining angles …
An interactive applet that acts as a 'digital manipulative' for explaining angles measured in degrees. The applet has an angle formed from two segment that can be dragged around in a circle. The angle measure is shown against a 'clock face' calibrated in degrees. The measures can be turned off for class angle estimation discussions. Applet can be enlarged to full screen size for use with a classroom projector. This resource is a component of the Math Open Reference Interactive Geometry textbook project at http://www.mathopenref.com.
In plane geometry, an angle is the figure formed by two rays, …
In plane geometry, an angle is the figure formed by two rays, called the sides of the angle, sharing a common endpoint, called the vertex of the angle.[1] Angles formed by two rays lie in a plane, but this plane does not have to be a Euclidean plane. Angles are also formed by the intersection of two planes in Euclidean and other spaces. These are called dihedral angles
Animals are an important part of the ecosystem. They help to maintain …
Animals are an important part of the ecosystem. They help to maintain the balance of nature by providing food for other animals, by pollinating plants, and by dispersing seeds. Animals are also important to humans, as they provide us with food, clothing, and companionship.However, animals are facing a number of threats, including habitat loss, climate change, and pollution. These threats are causing the decline of many animal species, and some species are even facing extinction.It is important to conserve animals and to protect their habitats so that future generations can enjoy them.
Hibernation is an ingenious adaptation that some animals employ to survive difficult …
Hibernation is an ingenious adaptation that some animals employ to survive difficult conditions in winter. This unit examines the differences between hibernation and torpor, and discusses the characteristic signs of hibernation behavior It explores the triggers that bring on hibernation, and whether internal signals or external season cues are predominant. It also examines the physiological adaptations that occur in hibernating animals.
The extreme challenges of life in the polar regions require the animals …
The extreme challenges of life in the polar regions require the animals who make their habitat there to make many adaptations. This unit explores the polar climate and how animals like reindeer, polar bears, penguins, sea life and even humans manage to survive there. It looks at the adaptations to physiological proceses, the environmental effects on diet, activity and fecundity, and contrasts the strategies of aquatic and land-based animals in surviving in this extreme habitat. This unit builds on and develops ideas from two other 'Animals at the extreme' units: The desert environment (S324_1) and Hibernation and torpor (S324_2).
Animal life has adapted to survive in the most unlikely and inhospitable …
Animal life has adapted to survive in the most unlikely and inhospitable habitats. This unit looks at the surprisingly diverse desert climates throughout the world and mammals, birds, lizards and amphibians that survive there. It splits these animals into three groups according to their strategy for survival: evaders, evaporators and endurers, then discusses how these strategies work on a biochemical and physiological level.
Ann Pamela Cunningham was an early leader in historic preservation and is …
Ann Pamela Cunningham was an early leader in historic preservation and is often credited with saving President George Washington’s estate Mount Vernon.
This resource is from a collection of biographies of famous women. It is provided by the National Women's History Museum, and may include links to supplemental materials including lesson plans about the subject and related topics, links to related biographies, and "works cited" pages. The biographies are sponsored by Susan D. Whiting.
Throughout her long life, Hedgeman advocated for civil rights, education, social justice, …
Throughout her long life, Hedgeman advocated for civil rights, education, social justice, poverty relief, and women.
This resource is from a collection of biographies of famous women. It is provided by the National Women's History Museum, and may include links to supplemental materials including lesson plans about the subject and related topics, links to related biographies, and "works cited" pages. The biographies are sponsored by Susan D. Whiting.
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