|
Featured Videos
|
|
Not Right For WatchKnowLearn
Ages: 9 - 18
5527 Views:
|
Bali is blessed with startlingly beautiful geography. The northern and western beaches have black sand, while the southern and eastern beaches have white sand. The Highest point is Mount Agung, towering over the island at 10,308 feet tall. The entire... island is ringed by coral reefs and its interior is lush with jungles and an incredible variety of plants and animals. Run time 0:55.
[more]
May 25, 2010 at 06:55 PM
|
|
|
Not Right For WatchKnowLearn
Ages: 13 - 18
3997 Views:
|
The instructor uses Audacity software, a click, a tube and a simple formula to calculate the speed of sound. (05:33)
June 16, 2012 at 06:28 AM
|
|
|
Not Right For WatchKnowLearn
Ages: 9 - 18
2863 Views:
|
The Mother Tyrannosaurus breaks her fast to provide a kill to feed her young. Even though they are small and vulnerable, the young T-Rex's already have a fierce competitive streak. (02:59)
April 27, 2010 at 02:17 AM
|
|
|
Not Right For WatchKnowLearn
Ages: 12 - 18
3965 Views:
|
NASA's Swift satellite has acquired the highest-resolution view of the neighboring spiral galaxy M31. Also known as the Andromeda Galaxy, M31 is the largest and closest such galaxy to our own. It's more than 220,000 light-years across and lies 2.5 mi...llion light-years away in the constellation Andromeda. Between May 25 and July 26, 2008, Swift's Ultraviolet/Optical Telescope (UVOT) acquired 330 images of M31 at wavelengths of 192.8, 224.6, and 260 nanometers. The images represent a total exposure time of 24 hours. Some 20,000 ultraviolet sources are visible in the image, including M32, a small galaxy in orbit around M31. Dense clusters of hot, young, blue stars sparkle in the disk beyond the galaxy's smooth, redder central bulge. Star clusters are especially plentiful along a ring about 150,000 light-years across. (03:06)
[more]
November 30, 2012 at 06:22 PM
|
|
|
Not Right For WatchKnowLearn
Ages: 10 - 18
2487 Views:
|
Hank introduces us to oxygen - the element that makes it possible for most animals to live, but which is simultaneously responsible for a lot of bad things going on in our bodies. (03:38)
September 16, 2012 at 07:09 AM
|
|
|
Not Right For WatchKnowLearn
Ages: 3 - 8
6456 Views:
|
This cartoon animation of the Robert Munsch picture book was part of a TV series called Bunch of Munsch, produced in the early 1990s. A leprechaun is in Shelly's sock drawer, and that's just the beginning of the problem. A good video to introduce st...udents to fantasy readings. (10:46)
[more]
November 21, 2009 at 11:37 PM
|
|