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Principle of Horizontality

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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.
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    Principle of Horizontality

    Principle of Horizontality

    by Jim Doherty, Ph.D. //at grade

    Rules for sedimentary rock formation.

  • Real World Application
    Icy Secrets

    Icy Secrets

    by David Carmichael //at grade

    Using the Antarctic science research being completed by ANDRILL, students will learn through personal scientist accounts how they determine the age of rocks and connect it to Earth's climate history. Students will then manipulate a simulation to see the impact climate change will have on the Antarctic ice sheet.

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