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Ages: 9 - 16
Video Brain Teaser #24-Optical Illusions
From YouTube, produced by VideoMathTutor.com
Videos that provide viewers with brain teasers/mental puzzles. These may consist of problems dealing with the arrangement of matchsticks, coins, and other items. May include pencil drawing games, optical illusions, hidden images and "Find the Twin" p... [more]
December 1, 2009 at 06:43 AM
Not Right For WatchKnowLearn
Ages: 10 - 18
Why Cancer is the Lawbreaker of the Cell Cycle
From YouTube, produced by The Amoeba Sisters
What exactly do cells do all day? Why do we even care? The Amoeba Sisters explain the importance of the cell cycle by describing a real world example: cancer.  (7:42)
September 19, 2013 at 02:13 PM
Not Right For WatchKnowLearn
Ages: 9 - 18
Line Graphs
From YouTube, produced by yourteacher.com
In this video episode students learn that a line graph is used to show change over time (such as the change in the population of a town over time), and the points on a line graph are plotted like the points on a coordinate grid.
January 27, 2010 at 02:54 PM
Not Right For WatchKnowLearn
Ages: 8 - 13
How to Do Long Division
From eHow, produced by eHow
According to the video instructor: Long division is usually done by dividing by numbers greater than 12, and the result should only be determined up to four significant figures. Do long division up to two decimal places with tips from a math teacher.... [more]
August 22, 2009 at 06:54 AM
Not Right For WatchKnowLearn
Ages: 14 - 18
"Someone Likes Stem-Changing Verbs" Song
From YouTube
A great song to teach the grammar concepts of stem-changing verbs in Spanish.  Sung to the tune of Adele's "Someone Like You." (4:51)
Found by josiebnhs in Spanish
February 28, 2013 at 08:35 PM