Many educational tools have gone out of fashion in the past few decades. A partial list includes the blackboard, the slide rule, the so-called New Math, the study of cursive penmanship, the mimeograph machine, carbon paper, dot matrix printers, slide projectors, and screaming modems.
Yes, lots of things have come and gone. But there is one thing that students still need to know about and use . . . Read more
With Pi Day coming up on March 14, 2018, this is a good time to review the most important Geometry formulas that every student should learn in high school. Read more