Clear Simple Way to Add or Subtract Pos. & Neg. Integers

What do dogs and cats have to do with math? Watch and see. Tim Bedley presents a concise and effective lesson on how to do problems such as -6 + 2= or -8 - (-4)=
http://www.rockinthestandards.com
http://www.timbedley.com

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Comment by Tim Bedley on December 6, 2008 at 4:25pm
Same concept. I like that idea!

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