By the end of this section, you will be able to do the following: Perform unit conversions in both SI and English units, Explain the most common prefixes of SI units, and be able to write them in scientific notation.

The Center for Mathematics and Science Education at the University of North Carolina at Chapel Hill provides an interesting and easy-to-use dictionary of the history and meaning of many measurement terms. Metric, International, and...

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.

This site allows you to convert weight/mass measurements. For example converting tons to grams. CCSS.Math.Content.3.MD.A.2 Measure and estimate liquid volumes and masses of objects using standard units

By the end of this section, you will be able to associate physical quantities with their International System of Units (SI) and perform conversions among SI units using scientific notation; relate measurement uncertainty to significant...

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.

Scroll down to the bottom of the page to view a table which lists measurement conversions for area.

This lesson plan familiarizes students in grades 4-6 with using the metric system and performing conversions.