On Oct 29, 2012, at 1:26 PM, Joe Niederberger <firstname.lastname@example.org> wrote:
> Clyde says: >> The child who has already learned to calculate the area of a rectangle is ready to *abstract* such proceedings by creating and using a FORMULA for doing so ... perhaps LxW or BxA.. > > Oops! I forgot (regarding above): How about "length x width"? > > Joe N
No, it can't be length x width, those are not letters. It has to be letters. Don't you know algebra?