I have seen a method of teaching multiplication that
used a box and diagonal lines. Do you know what this is called?
A discussion of multiplication grids can be found on the following website.
Hear is an excerpt from the web site.
"Yesterday¹s Chicago Tribune (9/21/06) ran an article about teaching math in
school [registration required to access the Tribune] that included something
I¹d never seen before: The multiplication grid.
I don¹t have any idea if this is better/worse/harder/easier, but I just
found it interesting. It¹s refreshing to see alternate solutions (grid) to
more common approaches (stacked)."
There are 63 comments on this web site regarding this method.
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Update: June 2012