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# SI Base Units

## Seven units that all other metric units are based on.

Levels are CK-12's student achievement levels.
Basic Students matched to this level have a partial mastery of prerequisite knowledge and skills fundamental for proficient work.
At Grade (Proficient) Students matched to this level have demonstrated competency over challenging subject matter, including subject matter knowledge, application of such knowledge to real-world situations, and analytical skills appropriate to subject matter.
Advanced Students matched to this level are ready for material that requires superior performance and mastery.

## SI Base Units

Describes the history of the metric system and units in the metric system.

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## SI base units

SI Base Units Interactive

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## SI Base Units Quiz

Reviews the SI base units and the distinction between the metric and English systems of measurement.

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• Practice
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## SI Base Units Practice

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To encourage students to generate questions, activate their prior knowledge, and collect information to answer their own questions using a Question and Answer Table.

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• Real World Application

## The Great Metric Unit Debate

Covers the adoption of the metric system and concerns about metric system in the U.S.

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