The metric system is on track for a mass makeover. In an effort to provide accurate measurements at all scales, scientists are preparing to redefine four basic units by the end of 2018. The shift will ...

Students are introduced to the metric system. Introduction to Chemistry continues with a discussion of the Metric System: length, mass, volume, time and temperature are defined, and students learn the ...

Americans have long used diverse weights and measures, reflecting their diverse origins. From colonial times, converting from one unit to another was part of courses in commercial arithmetic. The ...