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Interactive
Science Made Simple

Science Made Simple: Online Metric Converter

For Students 6th - 8th
Practice converting English units of measurement to metric units using this tool.
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Website
Music Theory

Music theory.net

For Students 9th - 10th
An online beginning music theory and ear training site. This site is for students to use at home to reinforce what they learn in class.
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Activity
Math Is Fun

Math Is Fun: Metric Length

For Students 3rd - 5th Standards
The different units used to measure metric length are described, with comparisons to real world objects. A wonderful number line also shows the relative sizes of things all the way from a quark to the universe in powers of ten.
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Activity
University of Cambridge

University of Cambridge: Nrich: Watching the Wheels Go `Round and `Round

For Students 3rd - 8th
Use the formula for the circumference of a circle to solve the challenge of this problem. The solution is available at this one page website.
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Handout
Cool Fire Technology

Customary & Metric Systems of Measurement Area Measure

For Students 5th - 8th Standards
Scroll down to the bottom of the page to view a table which lists measurement conversions for area.
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Graphic
Math2

Math2.org: Weights and Measures

For Students 9th - 10th Standards
This resource provides information on weights and measures, including unit conversion tables.