A PUZZLING MATH PROBLEM: There’s one thing that technology has yet to disrupt: the TI-83, a calculator that costs $100 and is older than most high school students. According to Mic, its creator, Texas Instruments, “has a staggering monopoly” that accounts for “93% of all graphing calculators sold in the U.S.” Luckily for students and teachers, there are web-based calculators (that presumably aren't also used by students to play games like Drugwars) offered by companies like Desmos that are giving Texas Instruments a run for its money—in its home state, of all places.
