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Not Right For WatchKnowLearn
Ages: 5 - 9
Number Line Subtraction Song
From YouTube, produced by
This animated musical video by Peter Weatherall demonstrates with a jumping bean how to subtract using the number line. This simply-animated video explores only one basic problem: 10-5=5. (01:16)
March 14, 2010 at 04:27 PM
Comments: 1
Not Right For WatchKnowLearn
Ages: 7 - 12
Number Families and Word Problems
From, produced by Discovery Education
Learn about subtracting and word problesm.  Number families contain three numbers, two small and one big. Using several different number families, students identify the subtraction and addition facts that can be formed using specific combinations of ... [more]
June 2, 2010 at 12:07 PM
Not Right For WatchKnowLearn
Ages: 5 - 10
Basic Subtraction - Khan Academy
From YouTube, produced by Salman Khan
Begins with a review of addition (in simple terms) with visual support. Number line is also used to demonstrate principles. (08:32)
April 3, 2009 at 01:34 AM