History of Measurement Systems

A Brief History (metric & standard)

Metric History (with pictures & practice)

Detailed History of Length Measurement

A Walk Through Time

Measurement Basics

English System of Measurement

Metric System of Measurement

Think Metric (self-study)

Everyday Metrics

Dictionary of Units

AAA Math Does Measurement

Scaling the Universe to the Desktop

How "Big" Things Are

Think Metric: Posters Page

Normal and Strange Units of Measure

Converting Between Systems

Practice: Converting Between Systems

Online Metric Converter

Scientific Notation

Kid's Cosmos Metrics & Scientific Notation

Institute for Energy and Environmental Research

Practicing Scientific Notation

Quick Math does Scientific Notation

GoMath Mini-Lesson in Scientific Notation

infoplease.com tutors Scientific Notation

Fact Monster does Scientific Notation

"Math for Morons" does Scientific Notation

PurpleMath does Exponents, Powers, & Scientific Notation

Regent's Prep: Beginning & Advanced Scientific Notation

"Whatis?" Scientific Notation

Both Sides of the Metric & Customary "Argument"

International Bureau of Measurement

U.S. Metric Association

Freedom to Measure (pro-Customary)

English/Imperial/Customary Measures

British Weights & Measures Association

Decimal Nature of Metric System

Birth of the Metric System

Essentials of SI

Large & Small Metric Prefixes

Metrics 4 Us!

Silly Arguments Against Metric