\input zb-basic
\input zb-matheduc
\iteman{ZMATH 2016e.00757}
\itemau{Sprows, David}
\itemti{When in doubt, add zero or multiply by one.}
\itemso{Math. Comput. Educ. 50, No. 2, 106-108 (2016).}
\itemab
From the text: In this note we consider a classroom unit designed to show students that the technique of adding zero or multiplying by one using appropriate expressions can often be the best way of solving a given problem. In particular, such a technique should not be considered a ``trick", but another useful tool.
\itemrv{~}
\itemcc{H20 H30 I40 I50 F50}
\itemut{manipulation of expressions; problem-solving strategies; modular arithmetic; divisibility; modular equivalence; quadratic equations; completing the square; adding zero; integral calculus; arctan function; derivation of the derivative of a product; indefinite integrals; substitution; multiplying by one; complex numbers; chain rule in derivation}
\itemli{}
\end