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Cindy Kroon

“You sunk my battleship!”Many of us have fond memories of the Milton Bradley game Battleship®. Using rectangular coordinates to identify and sink an opponent's ships remains a classic childhood pastime. A similar activity can be used to help students as they learn to plot positions in the polar coordinate system. The Common Core State Standards for Mathematics (CCSSM) suggest that students “[r]epresent complex numbers on the complex plane in rectangular and polar form, and explain why the rectangular and polar forms of a given complex number represent the same number” (CCSSM Standard N-CN.4).

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Robin S. O'Dell

Graphing orbits using linear iteration rules inspires enjoyment and artistry.

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John H. Lamb

Vector properties and the birds' frictionless environment help students understand the mathematics behind the game.