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Website
Simon Fraser University

Chem1 Virtual Textbook: Understanding the Units of Scientific Measurement

For Students 9th - 10th
As part of a larger site called "Getting started in Chemistry," this site examines the units of scientific measurement with specific attention given to SI base units, SI decimal prefixes, units outside SI, and more.
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eBook
Simon Fraser University

Chem1 Virtual Textbook: The Si Base Units

For Students 9th - 10th
As part of the General Chemistry Virtual Textbook, this site examines a variety of topics related to the measure of matter. In addition to a discussion on SI base units, the site covers the SI decimal prefixes, units outside the SI, and...