A well-organized table with the prefixes, symbols, names and numbers from one septillion to one septillionth!
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SIMetric.co
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A repeating slide show of images at different magnifications from the scale of the universe to the scale of nucleons.
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Science, Optics and You
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This website is great because it generates numbers for students to guess how many sig figs each number has.
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Significant Figures
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A collection of online calculators for various metric conversions.
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Science Made Simple
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This site helps students understand how to measure the volume. Great visuals.
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Volume Measurements
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Tables of SI base and derived units, metric prefixes. This page includes a diagram of how the base and derived SI units relate to each other.
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US Metric Association
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