“It’s hard to believe, but my students were among the first in the world to do it,” gushes middle school math teacher Cathy Yenca. “And after two test runs prior to testing day, there really weren’t ...

Sometimes you just need to make a graph. If your TI-84 isn’t handy, Desmos Graphing Calculator is a good backup to have. The app accepts both functions and tables of x and y values as inputs and ...