Mr. Hall had one rule: no calculators. Technology wasn’t his vibe. Math was my strong suit in school, but I struggled to tally the sums in my head. I weighed odd amounts of tomatoes, zucchini and ...

Indian teenager Aaryan Shulka performs calculations in his head quicker than most people can use a calculator. At a recent ...

Students can--and should--learn math concepts across subject matters, while maximizing their use of graphing calculators.