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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.
  • Read
    Maps as Models

    Maps as Models

    by Melinda Mericle //basic

    How to use topographic, bathymetric, and geologic maps.

  • Real World Application
    Our Blue Marble

    Our Blue Marble

    by Pamela Bollig //basic

    Fantastic images of Earth from space are created from instruments on spacecraft. These images can affect how humans perceive their planet.

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