I found the following blogpost very intriguing. This sounds like an engaging way of teaching children how to multiply, whether or not the Common Core was the educational fashion of the day: http://mathcoachscorner.blogspot.com/2014/08/a-peek-inside-theres-nothing-alien.html.
Math Coach’s Corner
Published by John Quintanilla
I'm a Professor of Mathematics and a University Distinguished Teaching Professor at the University of North Texas. For eight years, I was co-director of Teach North Texas, UNT's program for preparing secondary teachers of mathematics and science. View all posts by John Quintanilla
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