« previous next »
« previous next »
 

Did you know?

The modern decimal position system was the invention of the Hindus (around 800 AD), involving the placing of numerals to indicate their value (units, tens, hundreds, and so on).

Did you know?

According to the American College of Allergy, Asthma & Immunology, more than 50 million Americans have some kind of food allergy. Food allergies affect between 4 and 6% of children, and 4% of adults, according to the CDC. The most common food allergies include shellfish, peanuts, walnuts, fish, eggs, milk, and soy.

Did you know?

Alzheimer's disease affects only about 10% of people older than 65 years of age. Most forms of decreased mental function and dementia are caused by disuse (letting the mind get lazy).

Did you know?

Urine turns bright yellow if larger than normal amounts of certain substances are consumed; one of these substances is asparagus.

Did you know?

The immune system needs 9.5 hours of sleep in total darkness to recharge completely.

Changes in the abundance and egg-hatching success rate of prairie chickens. Changes in the abundance and egg-hatching success rate of prairie chickens.
Success Poster Success Poster
Ronald Reagan rides a horse—a familiar photo opportunity for presidents. But Reagan was an amiable ... Ronald Reagan rides a horse—a familiar photo opportunity for presidents. But Reagan was an amiable ...
Stepping It Up: Foundations for Success in Math, First Canadian Edition Stepping It Up: Foundations for Success in Math, First Canadian Edition
Success is an iceberg Success is an iceberg
Adapting to Blindness Adapting to Blindness
Video: Role of the urinary system - acidosis and alkalosis

For a complete list of videos, visit our video library