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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
    It’s Elemental

    It’s Elemental

    by CK-12 //basic

    Find out why carbon, bronze, and several other elements and alloys have had a huge influence on the course of human history.

  • Real World Application
    Star Light, Star Bright

    Star Light, Star Bright

    by CK-12 //basic

    Discover how scientists can analyze light given off by stars or unknown elements in order to determine their composition.

  • Real World Application
    Get Organized

    Get Organized

    by CK-12 //basic

    Learn how chemical elements are organized in the modern periodic table and why the organization is important.

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