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Concept Map

Bacteria and Humans loading

Introduces beneficial and harmful relationships between humans and bacteria.

Concept Map

Explore connections in math and science

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Discover related concepts in Math and Science.
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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.
  • Video
    Meet Your Microbes

    Meet Your Microbes

    by CK-12 //basic
    In this video, Eisen introduces us to the thousands of microbes living in and on our bodies and tells us a little bit about our studies of microbes.
    MEMORY METER
    This indicates how strong in your memory this concept is
  • Video
    Steven Johnson Tours the Ghost Map

    Steven Johnson Tours the Ghost Map

    by CK-12 //basic
    In this video, Johnson recounts the cholera outbreak in 1854 London and its profound impacts on scientific study and modern society.
    MEMORY METER
    This indicates how strong in your memory this concept is
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