Discussion:  All Lesson Plans in Math 2 on Android 
Topic:  Best & New way to teach Long Division 
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Subject:  RE: Best & New way to teach Long Division 
Author:  The Math Guy 
Date:  Jun 11 2014 
only reason for still teaching the divide/multiply/subtract/Bringdown method is
that we need it for dividing and factoring polynomials in Advanced Algebra and
Precalc. There are other algorithms that are both easy and transparent. The
one that I am most familar with is the one that I was taught in the late 50's.
(So it is not new...) We called it SIDELINEDIVISION but it seems to be
known today as THE BIG SEVEN DIVISION. It is most transparent and easy to
undrestand. The first number you put in the quotient has a conntection to the
final answer. In the traditional algorithm when you divide 3 into 285, the
first number in the quotient is a 9 but that really is the 90 in the final
answer of 95. We seldom have them put down a 90 (unless you are teaching
partial quotients) It doesn't teach place value...it just teaches following a
method...an algorithm that was designed for bookkeepers to use the fewest number
of marks  efficient  yes, transparent  no.
 
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