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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.
  • Real World Application
    All Mixed Up

    All Mixed Up

    by CK-12 //basic

    Discover how and why blood donations are made and how the components in whole blood can be separated and used to save lives.

  • Real World Application
    Salt from the Sea

    Salt from the Sea

    by CK-12 //basic

    Find out how salt is separated from sea water and how the harvested salt is used.

  • Real World Application
    Get the Salt Out

    Get the Salt Out

    by CK-12 //basic

    Find out how salt can be removed from ocean water and its potential to provide people with fresh drinking water.

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