Sometimes, a problem can be solved in a more efficient and interesting
manner if we approach it from a different point of view. That is,
instead of considering the problem in the most direct and obvious manner,
a different approach may yield the answer quickly and more efficiently. It
also might reveal some interesting reasoning. This is not to say that
the original or more obvious solution is incorrect. It is perfectly valid.
However, sometimes, examining the problem from a different point of
view can offer some excellent mathematics and should be discussed.
Remember that most mathematical problems can be solved in a number of
valid ways. Some will clearly be more elegant than others, and that might
be a subject for discussion with the class.We should encourage students to
use their ingenuity and then compare solutions. Learning the most elegant
method might be a goal to keep in mind. There is much more to be gained
by solving one problem in several ways than by solving several problems
each in only one way.