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Published on Apr 26, 2009
A derivative of Napiers Bones and perhaps the first calculator. (See Napiers Bones in Wikipedia.) The easiest of all multiplication algorithms to teach and learn. (The hard part is drawing the lattice.) First, work all of the multiplication facts (in any order). Then add up the columns of numbers generated along the diagonals. Superior to the standard method of multiplication because it separates the multiplication from the addition. Low stress because one can take a break in the middle of a problem and pick up where they left off. Virtually error free if one knows or can figure out the multiplication facts. Diagnostic in that the cells reveal what facts were wrong if the answer is incorrect. Go to MOVE IT Math™ on the web @ moveitmaththesource.com for lessons and teaching aids for Lattice Multiplication and other multiplication algorithms. The site is full of great basic math lessons that are effective with ALL children, including those who dont know what they ought to know by now and those who need enrichment. Please give us a chance to help you boost grades, increase test scores, and improve attitudes. EVERYONE can learn and like math. We are new to the web but have been making that happen for more than 35 years!