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Ages: 9 - 14
9382 Views:
Electron Flow Demonstration and Terminology
From YouTube, produced by Hila Science
This video explains electricity as the flow of atomic particles called electrons. Animations demonstrate electron flow. Batteries are described as chemical devices designed to create electron flow. Key words include: electrons, positive charge, neg... [more]
February 12, 2009 at 02:54 PM
Not Right For WatchKnowLearn
Ages: 9 - 16
4307 Views:
How to Simplify Fractions - Basic Math Tutor
From 5min, produced by MathTutor
In this section, we will learn about fractions, what they are, what they represent and how to use simplified fractions. NOTE: This is a clip from a much larger (seven hours) tutorial. Instructor uses a whiteboard. (29:02)
April 13, 2011 at 07:02 PM
Not Right For WatchKnowLearn
Ages: 8 - 15
5308 Views:
Introduction to Order of Operations - Khan Academy
From YouTube, produced by Sal Khan of Khan Academy
This video starts off with a black screen because the narrator uses it as a 'chalkboard'. In an easy, conversational tone, the instructor offers an introduction to the order of operations. (09:40)
June 9, 2010 at 05:46 AM
Not Right For WatchKnowLearn
Ages: 8 - 15
5308 Views:
Introduction to Order of Operations - Khan Academy
From YouTube, produced by Sal Khan of Khan Academy
This video starts off with a black screen because the narrator uses it as a 'chalkboard'. In an easy, conversational tone, the instructor offers an introduction to the order of operations. (09:40)
June 9, 2010 at 05:46 AM
Not Right For WatchKnowLearn
Ages: 11 - 16
2323 Views:
How to Identifying and Solving Proportions
From YouTube
The instructor uses a white board to demonstrate 3 ways to solve proportions.  The three methods used are multiplying up and down by the same multiple, multiplying across by the same multiple, or by using cross multiplication. (04:23)
March 7, 2010 at 05:11 PM
Not Right For WatchKnowLearn
Ages: 9 - 14
4257 Views:
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
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