The resource assesses students on British and metric conversions. There are tutorials on metric units, length, mass, volume, English units, symbols, and temperature. There is also an introduction and an interactive activity to test the...

Discusses how the metric system of measurement was developed and provides tables of unit conversions within the metric system, within the Imperial system, and between the two systems.

Look to this site for many important numbers and conversion factors used between the metric system and the customary system, such as speed of light, body temperature, distance from sun to earth, plus more.