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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
    Refraction and Lenses

    Refraction and Lenses

    by Jennifer Clark //basic

    Refraction of light in matter and how light changes its speed and angle of refraction according to the type of medium it is travelling through. What a lens is and what it does, concave and convex lenses.

  • Flashcards
    Refraction of Light

    Refraction of Light

    by Kyle Bardman //basic

    These flashcards will help you better understand physics.

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