http://nlvm.usu.edu/en/nav/frames_asid_312_g_4_t_1.html?from=topic_t_1.html
“Dueling Calculators” an applet allows students to visually and numerically see the differences calculator truncating and rounding can play in mathematics. When a calculator truncates (due to the size of its viewing window), answers are not usually effected greatly. Over time, however, repeated truncation can drastically change the solutions and results we get. This applet provides a resource for students to see that change.
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