Featured Videos

Not Right For WatchKnowLearn
Ages: 10 - 14
3501 Views:
Introduction to Perimeter
From YouTube, produced by LunaMath
This is an animation that explains perimeter and includes sample problems. (06:29)
August 21, 2009 at 12:58 PM
Not Right For WatchKnowLearn
Ages: 9 - 16
4361 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: 9 - 14
9482 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: 8 - 15
5365 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
5365 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
2358 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
Reason:  

  Cancel