Math Videos
Partial Products Method of Multiplication
http://www.mathatube.com/e-partial-products-method.html
http://teachertube.com/viewVideo.php?video_id=2508&title=Partial_Products_Method_Tutorial
Partial Sums Addition Method
http://www.mathatube.com/addition-partial-sum.html
Lattice Method of Multiplication
http://www.mathatube.com/e-lattice-mothed.html
http://www.teachertube.com/viewVideo.php?video_id=119649
http://www.teachertube.com/viewVideo.php?video_id=233722&title=Lattice_Multiplication_Tutorial
Counting Up Subtraction Method
http://www.mathatube.com/e-subtrac-counting-up.html
http://www.youtube.com/watch?v=rTsPiArdaGE
http://www.youtube.com/watch?v=g-UvK-VT3f0
http://www.youtube.com/watch?v=66JdCMbWlwY
(teaches the basics with small numbers)