But it is a method that can be taught understanding of. Although it doesn't look at all like the grid method it is essentially the same. Don't assume they won't understand because if you teach it properly with understanding of why (use decimal equipment- unit cubes, ten sticks, 100 blocks etc) then they probably will (most of them anyway!) understand it. By the way there is also a "half-way" method which looks just like long multiplication but with 4 rows of answers to add up, not 2, which are actually the same answers as in the grid method. This might help. And after mastery and understanding of this "half-way" (my description) method they can go one step further and do full long multiplication with 2 rows only.