With so many teenagers equipped with smartphones, it can be easy for older Americans to feel a little jealous of their younger counterparts. After all, cramming at the last minute before a big history exam is a lot easier if you can quickly double check facts on your iPhone. If the subject’s algebra or calculus, however, today’s high school kids have about the same technological edge as students did 10 years ago. That’s because the TI-84 Plus graphing calculator Continue reading →