I consider myself pretty conversant in metric units. I know that 20 kilograms is 44 pounds (double it and add 10%) and that five kilometers is a little over three miles (I’ve, uh, run a lot of 5Ks).

Students often struggle with temperature conversions in science courses due to time constraints. A simplified approximation method offers a solution by using basic arithmetic: double Celsius and add ...

Temperature in America is measured in degrees Fahrenheit, a system named after Polish-born physicist Daniel Gabriel Fahrenheit (1686-1736), who moved to the Netherlands and became one of the pioneers ...