This is an animated PowerPoint presentation, with associated worksheets, demonstrating the conversion between different metric prefixes on a basic unit, without memorizing any complicated numbers or formulas. Your students will easily remember how to convert between kilo-, hecto-, deka-, deci-, centi-, milli-, micro-, and nano- ...grams, meters, liters, or seconds. Angstroms are also mentioned, although they are a unit, rather than a prefix. This is a skill useful in science, and also in the med