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Not Right For WatchKnowLearn
Ages: 8 - 18
Invasive Species Spreading Across America
From YouTube, produced by CBS
Scientists estimate that there are currently 50,000 invasive plant and animal species in America - and that number's sure to rise. Mark Strassmann reports in this CBS news special.  Some animals discussed are Asian Silver Carp, African Killer Honey B... [more]
November 12, 2012 at 02:59 PM
Not Right For WatchKnowLearn
Ages: 11 - 18
Frog Portrait
From YouTube, produced by Monster by Mail
Watch and learn from the artist's drawing. No narration.  (03:12)
August 17, 2009 at 05:39 PM
Not Right For WatchKnowLearn
Ages: 15 - 18
Colosseum (Amphitheatrum Flavium), c. 70-80 C.E., Rome - Smart History at Khan Academy
From YouTube, produced by smarthistoryvideos
This video discusses the history of the Colosseum (Amphitheatrum Flavium), c. 70-80 C.E., Rome. Speakers: Valentina Follo (courtesy of Context Travel), Dr. Beth Harris, and Dr. Steven Zucker discuss the types of materials used, the types of columns, ... [more]
May 9, 2012 at 08:39 PM
Not Right For WatchKnowLearn
Ages: 9 - 14
How to Multiply and Divide Fractions
From YouTube, produced by For Dummies
This video shows how to multiply and divide fractions by multiplying the numerators and denominators — even if the fractions have unlike denominators. Run time 01:49.
November 27, 2010 at 08:39 PM
Not Right For WatchKnowLearn
Ages: 10 - 18
Chart Basics
From YouTube, produced by ExcelIsFun
The Excel Basics Series shows a systematic description of what Excel can do from beginning to end. #16 Video topics :Link Chart labels to cells using the F2 key and the equal sign ,Column Chart Graph, Bar Chart Graph, Pie Chart Graph, X Y Scatter Dia... [more]
April 12, 2010 at 09:13 PM