\input zb-basic
\input zb-matheduc
\iteman{ZMATH 2016e.00758}
\itemau{Chu, Tom N.}
\itemti{Summation formulas involving polynomials.}
\itemso{Math. Teach. (Reston) 109, No. 5, 393-397 (2015).}
\itemab
Summary: Direct proofs for the sum of squares, the sum of cubes, and the sum of fourth powers use visualization to teach the identities.
\itemrv{~}
\itemcc{H20 I30 E50 G90}
\itemut{sums of powers; series; integers; identities; pictorial approach; visualization; geometric proofs; algebraic proofs; generalization; algebraic reasoning; geometric reasoning; multiple representations}
\itemli{}
\end