Have you ever held an abacus in your hands? Chances are yes. Many grade schools use this ancient calculating device as a way of introducing students to some fundamental aspects of mathematics.
Have you ever held a slide rule in your hands? If you are a so-called “millennial” or slightly older, chances are not. Why? Because the slide rule, which in its day was considered by many as the eighth wonder of the world, has virtually passed away without a trace.Continue reading